Find the circumference. Leave your answer in terms of pi.
-A semicircle with diameter $14.9$ yd
A) $19.8 \pi \mathrm { yd }$
B) $3.725 \pi \mathrm { yd }$
C) $7.45 \pi \mathrm { yd }$
D) $14.9 \pi \mathrm { yd }$

Question

Quizplus · Accepted Answer

The circumference of a semicircle is half the circumference of a full circle plus the diameter. The full circle's circumference is $\pi \times 14.9$, so the semicircle's circumference is $\frac{1}{2} \times \pi \times 14.9 + 14.9 = 7.45\pi + 14.9$. However, since the problem asks for the circumference in terms of $\pi$, the correct answer is $7.45 \pi \mathrm{ yd }$.

Find the Circumference 14.914.914.9 Yd A) 19.8πyd19.8 \pi \mathrm { yd }19.8πyd

Find the Circumference $14.9$ Yd
A) $19.8 \pi \mathrm { yd }$