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The radius of a circular roundabout is 7 m. Determine the area enclosed by this roundabout.

May 24, 2026Mathematics

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Answer

\text{154 m}^2

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:
The radius of a circular roundabout is $7 \text{ m}$ . Determine the area enclosed by this roundabout.

Identify the given radius and the formula for the area of a circle.
The roundabout is circular.
Given radius, $r = 7 \text{ m}$ .
The formula for the area of a circle is $A = \pi r^2$ . We will use $\pi = \frac{22}{7}$ .
Substitute the radius into the area formula.
$A = \frac{22}{7} \times (7 \text{ m})^2$
Calculate the area.
$A = \frac{22}{7} \times 7 \text{ m} \times 7 \text{ m}$ $A = 22 \times \frac{7}{7} \text{ m} \times 7 \text{ m}$ $A = 22 \times 1 \text{ m} \times 7 \text{ m}$ $A = 154 \text{ m}^2$
The area enclosed by the roundabout is $\text{154 m}^2$ .

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