Question

I need help with these questions.

Answer 1

Answer:

Q1) C=2pi r

C= 2 x 7.5 x 3.142

C= 47.13

Q2) A= pi r^2

A= 3.142 x 7.5^2

=3.142 x 56.25

A=176.74

Q3) A= pi r^2

A= pi 6^2

A=36pi mm^2

Q4) A= pi r^2

A= 4^2 x 3.142

A= 50.3

Q5) A=pi r^2

Radius= C/2---------------------> R=14/2--------------> R=7

A=pi x 7^2

A=49 pi cm^2