Question

please solve this question​

Answer 1

Answer:

for this

firstly find circumference of circle

so

circumference of circle = 2πr = 2 x 22/7 x 21

= 44 x 3 = 132cm

According to question

length = 4x and breadth = 5x

perimeter of rectangle = 132

2 ( l + b) = 132

(4x + 5x) = 66

9x = 66

x = 22/3

length = 4 x 22/3 = 88/3 cm

breadth = 5 x 22/3 = 110/3 cm

area of rectangle = length x breadth

= 88/3 x 110/3

= 9680/9cm²