Question

BRAINLIESTT ASAP! PLEASE HELP ME :)

Answer 1

Circumference is 25.13
area is 50.27

Answer 2

Answers:

Exact area = 16pi   square meters

Exact circumference = 8pi    meters

Note how the units are not the same for each. The area involves square units while the circumference is a linear unit.

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Work Shown:

d = 8 is the diameter

r = d/2 = 8/2 = 4 is the radius

A = area of circle

A = pi*r^2

A = pi*4^2

A = pi*16

A = 16pi

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C = circumference of the circle

C = pi*d

C = pi*8

C = 8pi

Alternatively,

C = 2*pi*r

C = 2*pi*4

C = 2*4*pi

C = 8pi