Question

find the area of a circle whose circumference is the same as perimeter of a square of side 22 cm find the ratio of circumference of two wheel if the ratio of their radii is 4:5​

Answer 1

Answer:

Area of circle = 77/2 cm^2

Ratio of circumference = 4:5

Step-by-step explanation:

Circumference = 22 cm

2 × 22/7 × r = 22

r = 22 × 7/22×2

r = 7/2 cm

Area = 22/7 × 7/2 × 7/2 = 77/2 cm^2