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Avneet buys 9 square paving slabs, each with a side of 1 / 2 m. He lays them in the form of a square. (a) What is the perimeter of his arrangement [fig 10.7(i)]? (b) Shari does not like his arrangement. She gets him to lay them out like a cross. What is the perimeter of her arrangement [(Fig 10.7 (ii)]? (c) Which has greater perimeter? (d) Avneet wonders if there is a way of getting an even greater perimeter. Can you find a way of doing this? (The paving slabs must meet along complete edges i.e they cannot be broken.)

Solutions: (a)Side of square = 3 × side = 3 × 1 / 2 = 3 / 2 m Perimeter of Square = 4 × 3 / 2 = 2 × 3 = 6 m (b)... View Article

What is the perimeter of each of the each of the following figures? What do you infer from the the answers?

Solution: (a)Perimeter of square = 4 × side = 4 × 25 = 100 cm (b) Perimeter of rectangle = 2 (40 + 10) = 2 × 50 = 100... View Article

Sweety runs around a square park of side 75 m. Bulbul runs around a rectangular park with length 60 m and breadth 45 m. Who covers less distance?

Given Side of square park ran by sweety=75m Length of rectangular park ran by Bulbul= 60m Breadth of rectangular park ran by bulbul =45cm... View Article

Find the cost of fencing a rectangular park of length 175 cm and breadth 125 m at the rate of ₹ 12 per metre.

Given Length of rectangular park= 175cm Breadth of rectangular park =125cm Cost of fencing the given rectangular park= ₹ 12 per metre Find... View Article

Find the cost of fencing a square park of side 250 m at the rate of ₹ 20 per metre.

Given Side of a square park =250cm Cost of fencing the given square park= ₹ 20 per metre Find out We have to determine the cost of fencing the... View Article

Two sides of a triangle are 12 cm and 14 cm. The perimeter of the triangle is 36 cm. What is its third side?

Given The sides of the triangle as 12cm and 14cm The perimeter of the triangle = 36 cm Find out We have to determine the third side of... View Article

A piece of strings is 30 cm long. What will be the length of each side if the string is used to form: (a) a square? (b) an equilateral triangle? (c) a regular hexagon?

Solution: Length of the string =30 (a) Perimeter of square = 30 cm 4 × side = 30 Side = 30 / 4 Side of the square = 7.5 cm (b)... View Article

The perimeter of a regular pentagon is 100 cm. How long is its each side?

Solution We know that the perimeter of a pentagon is given by= 5 x side Perimeter of pentagon= 100 cm The perimeter of pentagon = 5... View Article

Find the side of the square whose perimeter is 20 m.

Solution We know that the perimeter of a square is given by= 4 x side Perimeter of square= 20 cm Perimeter of square = 4 × side 20... View Article

25 Aug 2021: UPSC Exam Comprehensive News Analysis

August 25th, 2021, CNA:- Download PDF Here TABLE OF CONTENTS A. GS 1 Related B. GS 2 Related POLITY AND GOVERNANCE 1. ‘Economic criterion not... View Article

Find the perimeter of a regular hexagon with each side measuring 8 m.

Solution We know that the perimeter of a hexagon is given by= 6 x side Side of hexagon= 48cm The perimeter of hexagon = 6 × 8 = 48... View Article

Find the perimeter of a triangle with sides measuring 10 cm, 14 cm and 15 cm.

Solution We know that the perimeter of a triangle is given by= sum of all the sides of a triangle Perimeter of triangle = 10cm + 14cm + 15cm =... View Article

Find the perimeter of each of the following shapes: (a) A triangle of sides 3 cm, 4 cm and 5 cm (b) An equilateral triangle of side 9 cm (c) An isosceles triangle with equal sides 8 cm each and third side 6 cm.

(a) A triangle of sides 3 cm, 4 cm and 5 cm Solution Perimeter of triangle= sum of all sides = 3cm + 4cm + 5cm = 12 cm (b) An equilateral... View Article

A rectangular piece of land measures 0.7 km by 0.5 km. Each side is to be fenced with 4 rows of wires. What is the length of the wire needed?

Given Length of a piece of land = 0.7km The breadth of a piece of land = 0.5km Find out We have to determine the length of the wire needed... View Article

What is the length of the wooden strip required to frame a photograph of length and breadth 32 cm and 21 cm respectively?

Given Length of photograph frame = 32 Breadth of photograph frame = 21 Find out We have to determine the length of the wooden strip... View Article

A table top measures 2 m 25 cm by 1 m 50 cm. What is the perimeter of the table top?

Given Length of table top = 2 m 25 cm = 2.25 m Breadth of table top = 1 m 50 cm = 1.50 m Find out We have to determine the perimeter of... View Article

The lid of a rectangular box of sides 40 cm by 10 cm is sealed all around with tape. What is the length of the tape required?

Given Length of the rectangular box= 40cm The breadth of the rectangular box=10 cm Find out We have to determine the length of the tape... View Article

Find the perimeter of each of the following figures:

Solution: We know that perimeter is given by sum of all the sides of the given geometric shape. Let us determine the perimeter of the... View Article

In each figure alongside, a letter of the alphabet is shown along with a vertical line. Take the mirror image of the letter in the given line. Find which letters look the same after reflection (i.e. which letters look the same in the image) and which do not. Can you guess why?

Solutions: The mirror images of the given figures are shown below... View Article

Copy the following drawing on squared paper. Complete each one of them such that the resulting figure has two dotted lines as two lines of symmetry. How did you go about completing the picture?

Solutions: We can complete the given figures by drawing similar parts as shown in these figures. Let us first draw the vertical... View Article

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