7. A circle with a radius of 5 inches would have an area of about A. 25 square inches B. 15.7 square inches C. 31.4 inches D. 78.5 square inches

Question

UpStudy AI · Accepted Answer

Given that the area of a circle is calculated by the formula

$$
A = \pi r^2,
$$

and the radius $$ r $$ is $$ 5 $$ inches, substitute into the formula:

$$
A = \pi (5)^2 = 25\pi.
$$

Approximating $$\pi$$ as $$3.14$$:

$$
A \approx 25 \times 3.14 = 78.5 \text{ square inches}.
$$

Thus, the correct answer is D. 78.5 square inches.
The area of the circle is approximately 78.5 square inches.

Upstudy AI Solution