Question

A square with a side 0.05 m
& Fincrease of a stadium is diameter is 0.2 km Express the answer in metres. (Take == 3.14)
The breach and perimeter of a rectangular field are 30 om and 1.8 m, respectively. Find the length
A wire in the form of a square with side 22 om it is reshaped and bent into the form of a circle
Find the circumference of a well as diameter is 1.5 m (Take = 3.14)
2 Find the area of the adjoining paralelogram and hence find the
290.2
P
12: Find the base of a parallelogram it the corresponding height is 4 om and area is 24 sq. om.
1. Find the height of a triangle whose bese is 40 cm and area is 0.04 so m.
12 Find the area of a square whose perimeter is 120 m
13. A room 6.5 m long and 45 m wide is surrounded by a verandah 1 m wide. Find the area occupied by
the verandah
14. Two concentric circles have the radi 12 om and 10.5 cm, respectively. Calculate the area of the
space between these two circles. (Take = 3.14)​

Answer 1

Answer:

Given that side of the square is 22 cm

Perimeter of the square =4a

=4×22

=88 cm

As the same wire is used to form a circle then both will have same perimeter.

Perimeter of circle = Perimeter of square

⇒2πr=88

⇒2×

7

22

r=88

⇒r=

22×2

88×7

⇒r=14 cm

Hence radius of the circle is 14 cm.

then,

Area of the circle =πr

2

=

7

22

×14×14

=616 cm

2