Question

A circle has an approximate circumference of 574 meters
. What is the circle’s diameter, rounded to the nearest tenth? Use 3.14
for π
. (1 point)

If a circle has a radius of 38 inches
, what is its approximate circumference to the nearest hundredths? Use 3.14
for π
.(1 point)

The radius of a circle is 75 mm. What is the approximate area of the circle? Write your answer to the tenths place. Use 3.14 for π
.(1 point)

Answer 1

1) Diameter = C/π = 574 ÷ 3.14 = 182.8 m (to the nearest tenth).

2) Circumference = 2πr = 2·3.14·38 = 238.64 in (to the nearest hundredths).

3) Area = πr^2 = 3.14·75^2 = 3.14·5625 = 17,662.5 mm^2 (to the tenths place).