Question

Find the perimeter or circumference and area of each figure if each unit on the graph measures

1 centimeter. Round answers to the nearest tenth, if necessary.

Answer 1

Circumference of the circle = 17.8 units

Area of the circle = 25.1 square unit

Explanation:

Formula to get the circumference of a circle = 2πr

Where r = radius of the circle

Radius of the given circle = Distance between the points A(2, 3) and B(4, 1)

r =
`√((2-4)^2+(3-1)^2)`

r =
`2√(2)` units

Therefore, circumference = 2π(2√2)

= 17.77

≈ 17.8 units

Area of the circle = πr²

= π(2√2)²

= 8π

= 25.13

≈ 25.1 square unit