Question

circular grassy plot is surrounded by a ring of gravel.the cirumference of the grass plot is 264m.find the width of the gravel if the circumference of the outer circle is 396m.

Answer 1

Answer:21m

Step-by-step explanation:

circumference = 264 m

so 2πr = 264 m

⇒r = 264/2 × 7/22

⇒r = 42m

circumference of the outer circle = 396 m

2πr = 396m

r = 63m

so width of the gravel path = 63 - 42 m

= 21 m(ans)