Question

Find the area of the circle. Round your answer to the nearest hundredth.

Answer 1

π

Explanation:

Area of a circle =
`r^(2)`π

1. Find the radius.

You should view the "length" of this circle as the diameter of the circle. So the diameter of the circle is 2 cm ⇒ r =
`(2)/(2)` where the numerator is the diameter of the circle (2) and the denominator is always 2. So the radius is 1. The radius is half the length of the diameter.

2. Substitute the values.

A =
`(1)^(2)`π Always put the radius in parentheses before evaluating.

A = π
`1^(2)` = 1 and 1 · π = π

Answer 2

3.14 cm²

Explanation:

Given that,

→ Diameter = 2 cm

→ Radius (r) = 2/2 = 1 cm

Formula we use,

→ Area of circle = πr²

Then the area of circle will be,

→ πr²

→ 3.14 × 1 × 1

→ 3.14 cm²

Hence, the solution is 3.14 cm².