69.0k views
25 votes
A certain coin is a circle with diameter 42 mm. What is the exact area of each side of the coin?

The exact area of each side of the coin is mm.
(Simplify your answer. Type an exact answer in terms of .)

2 Answers

9 votes

Answer:

A≈1.39×10-3m²

Explanation:

User GAgnew
by
3.3k points
8 votes

The area of a circle is r^2 x PI

r is half the diameter = 21mm

Area = 21^2 x PI

area = 441pi

User Mukesh Garg
by
3.6k points