Perimeter

Q. Show the following information by percentage bar graph.

Division of standard 8	A	B	C	D
Number of students securring grade A	45	33	10	15
Total number of students	60	55	40	75

Q.

State true or false
A line segment is a part of the line that has a fixed length

1. True

2. False

Q. 1. If the perimeter of an isosceles right angle triangle is 2P then its area is given by

Q.

What dimension does a point have?

Q. The area of an isosceles triangle having base 2cm and the length of one of the equal sides 4cm, is

1. $\sqrt{15}c{m}^2$
2. $\sqrt{\frac{15}{2}c{m}^2}$
3. $2\sqrt{15}c{m}^2$
4. $4\sqrt{15}c{m}^2$

Q.

The figure which starts and ends at the same point is known as a/an

1. closed curve

2. closed circle

3. open curve

4. curvilinear path

Q.

The collection of all the points in a plane, which are at a fixed distance from a fixed point in the plane is called ______.

1. rectangle

2. square

3. circle

4. rhombus

Q. A regular polygon with 9 sides is called:

1. Octagon
2. Decagon
3. Nonagon
4. Dodecagon

Q.

A line has __ length.

Q.

A line has two end points.

1. True
2. False

Q.

A piece of string is $30cm$ long. What will be the length of each side if the string is used to form a regular hexagon?

Q.

Following graph shows the perimeter of square of different sides:

Using graph find the perimeter of square of side 3.5 cm.

1. 14 cm

2. 11 cm

3. 16 cm

4. 12 cm

Q.

Question 79

Find the area of the shaded portion in the following figure.

Q.

Question 17

What is the area of the rhombus ABCD below if AC = 6 cm and BE = 4 cm?

(a) $36c{m}^2$ (b) $16c{m}^2$ (c) $24c{m}^2$ (d) $13c{m}^2$

Q.

Puja is the owner of a farm as shown in the figure. She goes to the market to buy the fence wire for the field. Calculate the minimum length of the wire to be bought by Puja so that the entire farm is covered. (All dimensions are in m)

1. 55

2. 70

3. 60

4. 45

Q.

Perimeter of a regular decagon is $900$ cm. What is the length of each side?

1. $90cm$

2. $100cm$

3. $112.5cm$

4. $118cm$

Q. In rhombus ABCD, AB = 7.5 cm, and AC = 12 cm. Find the area of the rhombus.

Q. Question 5 (iii)

State the name of a regular polygon of:
(iii) 6 sides

Q. A line segment is the shortest distance between any two ___.

Q.

The collection of all the points in a plane, which are at a fixed distance from a fixed point in the plane, is called:

1. Rhombus

2. Circle

3. Rectangle

4. Square

Q. If the diagonals of a rhombus ABCD intersect at O such that AO = 6 cm and BO = 4 cm, find the area of the rhombus ABCD

1. 88 cm${}^2$
2. 48 cm${}^2$
3. 56 cm${}^2$
4. 76 cm${}^2$

Q.

The perimeter of a square whose area is $4.41m^2$ is ___ m.

1. 41

2. 62

3. 82

4. 31

Q.

A regular hexagon has a perimeter of $48cm.$ Each of its sides is

1. $6cm$

2. $4cm$

3. $12cm$

4. $8cm$

Q. what is the actual meaning of mensuration?

Q. If the perimeter of an equilateral triangle is $36cm$, calculate its area and height.

Q.

The cost of fencing a triangular ground having the sides 15 m, 8 m and x m at the rate of ₹ 3 per m is :

1. ₹ 220

2. ₹ 140

3. ₹ 120

4. ₹ 100

Q. Question 88
Fill in the blanks to make the statements true.​​​​​​​
Adjacent angles of a parallelogram are ___

Q. Question 113
State whether the statements are True or False.
Every kite is a parallelogram.

Q. A regular polygon with 9 sides is called:

1. Octagon
2. Nonagon
3. Decagon
4. Dodecagon

Q.

Rashmi has a road map with a scale of 1 cm representing 18 km. She drives on a road for 72 km. What would be her distance covered in the map?