Question

What is the area of a circle with a diameter of 10 millimeters? Estimate the area to the tenths place using 3.14 for π .

Answer 1

78.5 mm^2

Explanation:

The area of the circle with the diameter of 10 millimeters is approximately 78.5 square millimeters.

First step: Use the formula A =πr^2, where A means the area and r means the radius of the circle.

2. In this case, the radius would be 10mm/ 2 = 5mm.

3. And then use the radius to find the area

A = 3.14 * (5mm)^2

4. Simplify it and you get

A = 78.5mm^2

Therefore, the area is approximately 78.5 square millimeters

Answer 2

A = 78.5 mm^2

Explanation:

diameter : 10

Radius: 5

A = pi * r^2
A = 3.14 * 5^2
A = 3.14 * 25 = 78.5 mm^2