Perimeter of a Triangle

Q.

Find the area of a circle whose radius is $14Cm$.

Q. Find the perimeter of a triangle of sides 3 cm, 4 cm and 5 cm.

1. 12 m
2. 12 cm
3. 60 m
4. 60 cm

Q.

The diagonal of a rectangular field is $60m$ more than shorter side. If the longer side is $30m$ more than the shorter side, find the sides of the field.

Q.

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

Q.

There is a narrow rectangular plot, reserved for a school, in Mahuli village. The length and breadth of the plot are in the ratio of $11:4$ At the rate of $₹100permeter$ it will cost the village panchayat $₹75000$to fence the plot. What are the dimensions of the plot?

Q.

Question 22

Perimeter of an isosceles triangle is 50 cm. If one of the two equal sides is 18 cm, find the third side.

Q.

A room is 13 m long and 9m broad. Find the cost of carpeting the room with a carpet 75 cm broad at the cost of 50 per metre

Q.

Find the perimeter of an equilateral triangle of side $9cm$.

Q.

Question 6(c)

Find the perimeter of an isosceles triangle with equal sides 8 cm each and third side 6 cm.

Q.

The side of an equilateral triangle is shown by $l$. Express the perimeter of the equilateral triangle using $l$.

Q. If Each Side Of A Scalene Triangle Is Doubled Then Area would be increased By How much

Q.

Find the circumference of the circle with radius $7cm.$

1. $7cm$
2. $44cm$
3. $21cm$
4. $14cm$

Q.

Question 34

The perimeter of a triangle is 28 cm. One of it's sides is 8 cm. Write all the sides of the posible isosceles triangles with these measurements.

Q.

In the given figure, all triangles are equilateral and $AB=8$ units. Other triangles have been formed by taking the mid-points of the sides. What is the perimeter of the figure?

Q.

Question 6(a)

Find the perimeter of a triangle of sides 3 cm, 4 cm and 5 cm.

Q. Distance covered by a wheel of radius 14 cm in one rotation is:

1. 14 cm
2. 58 cm
3. 88 cm
4. 36 cm

Q.

By splitting the following figures into rectangles, find their areas (The measures are given in centimetres).

Q.

The perimeter of a square is $144cm$, its area is _________sq. cm.

1. $720$

2. $576$

3. $360$

4. $1296$

Q.

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

Q.

The perimeter of a regular hexagon whose side is 12 cm is __

Q.

From a circular sheet of radius $4\mathrm{cm}$, a circle of radius $3\mathrm{cm}$ is removed. Find the area of the remaining sheet. (Take $\mathrm{\pi }=3.14$)

Q.

Find the area of a rhombus whose diagonals are of lengths 12 cm and 15 cm. [1 MARK]

Q.

Question 11(b)

A piece of string is 30 cm long. What will be the length of each side if the string is used to form an equilateral triangle?

Q.

A table top is $9dmand5cm$ long and $6dmand5cm$ broad. What will be the cost to polish it at the rate of $20$ paise per square centimetre?

Q.

A rectangular park is 40m wide and 35m long. A path 2.5m wide is constructed outside the path. Find the area of the path. [4 MARKS]

Q.

Find the perimeter of a semicircular region with a straight side that is 8 yards long.

Q.

Find the area of the following figure (in sq. cm).

​​

1. 55
2. 56
3. 46
4. 32

Q. A wire is bent in the shape of a square with each side =12 cm. If the same wire is bent in the form of an equilateral triangle, find the length of each side of the triangle?

1. 12 cm
2. 15 cm
3. 16 cm
4. 20 cm

Q.

Question 92

Perimeter of a triangle is found by using the formula p = a + b + c, where a, b and c are the sides of the triangle. Write the rule that is expressed by this formula in words.

Q.

Question 124

Calculate the area of shaded region in the given figure, where all of the short line segments are at right angles to each other and 1 cm long.