Maths Express 7>Chapter 16 - Perimeter and Area>EXERCISE 16.4>Q 4

MEDIUM

7th CBSE

IMPORTANT

Earn 100

There is a grassbed of width $1 m$ running around a square waterbed inside a park of side $50 m$ as shown in the figure. Find the area of the grassbed.

Important Questions on Perimeter and Area

MEDIUM

7th CBSE

IMPORTANT

Maths Express 7>Chapter 16 - Perimeter and Area>EXERCISE 16.4>Q 5

The length and breadth of a rectangular park are

54 m

and

36 m

respectively. A path of width

2 m

is to be built inside the park. Find the area of the path. Find the cost of cementing it at the rate of

₹ 30 per sq . m

.

MEDIUM

7th CBSE

IMPORTANT

Maths Express 7>Chapter 16 - Perimeter and Area>EXERCISE 16.4>Q 6

Two crossroads, each of width

3 m

, run at right angles and parallel to the sides of a rectangular plot of dimensions

80 m \times 60 m

. Find the area of the roads.

HARD

7th CBSE

IMPORTANT

Maths Express 7>Chapter 16 - Perimeter and Area>EXERCISE 16.4>Q 7

A square field of side

800 m

has two crossroads that cut at right angles through the centre of the field. Find the area of the field, excluding the crossroads in hectares, given that the width of both the roads are

4 m

and they are parallel to the sides of the field.

MEDIUM

7th CBSE

IMPORTANT

Maths Express 7>Chapter 16 - Perimeter and Area>EXERCISE 16.4>Q 8

There is a circular waterbed of diameter

14 m

in a garden. It is surrounded by a path of width

2 m

to keep flower pots. Find the area of the path and also calculate the cost of cementing this path at the rate of

₹ 32 per sq . m

. (Take

π = \frac{22}{7}

)

MEDIUM

7th CBSE

IMPORTANT

Maths Express 7>Chapter 16 - Perimeter and Area>EXERCISE 16.4>Q 9

There is a circular waterbed of radius 5 m inside the rectangular park of length 15 m and breadth 12 m as shown in the figure. Find the area of the park excluding the waterbed and also find the cost of fencing the waterbed at the rate of rs 60 per sq.m. (Take $π = 3.14$ )

Question Image