Question

Find the area and the circumference of a circle with diameter 3 ft.

Use the value 3.14 for it, and do not round your answers. Be sure to include the correct units in your answers.
ft
3 ft
Area: 1
Circumference:
Х

Answer 1

Explanation:

circumference of a circle :

2×pi×r

area of a circle

pi×r²

r(radius) is diameter/2. = 1.5ft

we shall assume 3.14 to be pi.

so,

circumference is

2 × 3.14 × 1.5 = 3.14 × 3 = 9.42 ft

area is

3.14 × 1.5² = 3.14 × 2.25 = 7.065 ft²