Question

find the area of this circle.
use 3.14 for π.
area of a circle
a = πr²
a =? cm²
round your answer to the nearest tenth.

Explanation:

Step1: Substitute the radius into the formula

Given \( r = 1\) cm and \( \pi=3.14\), use the formula \( A=\pi r^{2}\).
Substitute \( r = 1\) into the formula: \( A = 3.14\times(1)^{2}\).

Step2: Calculate the value

First, calculate \( (1)^{2}=1\). Then \( A=3.14\times1 = 3.14\).
Rounding \( 3.14\) to the nearest tenth gives \( 3.1\).

Answer:

\(3.1\)