Question

a circular water reservoir has a radius of 0.3 kilometer. what is the approximate area covered by the reservoir? use 3.14 for π. 0.28 square kilometer, 1.88 square kilometers, 1.13 square kilometers, 0.94 square kilometer

Explanation:

Step1: Recall area formula for circle

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius of the circle.

Step2: Substitute given values

Given $r = 0.3$ km and $\pi=3.14$. Substitute into the formula: $A=3.14\times(0.3)^{2}$.

Step3: Calculate the result

First, $(0.3)^{2}=0.09$. Then $A = 3.14\times0.09=0.2826\approx0.28$ square - kilometers.

Answer:

0.28 square kilometer