Question

A coin has a diameter of 24.26 mm. What is the area of one face of the coin? Give your answer correct to 2 decimal places.

(Use the calculator value of π)

Area of the circle = π x r² = ___ mm.

Answer 1

462.2 mm

Explanation:

R is radius and diameter is like 2r so divide the diameter by 2 which is 12.13

then 12.13 times 12.13 is 147.14 (rounded up)

the 147.14 times pie is 462.2 mm