Question

the radius of the circular placenta below is 8 inches. which measurement is closest to the area of the placenta? o 25 square inches o 50 square inches o 201 square inches o 804 square inches

Explanation:

Step1: Recall area - formula for a circle

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

Step2: Substitute the given radius

Given $r = 8$ inches. Substitute $r = 8$ into the formula: $A=\pi\times(8)^{2}=\pi\times64$.

Step3: Approximate the value of $\pi$

Take $\pi\approx3.14$. Then $A\approx3.14\times64 = 200.96\approx201$ square inches.

Answer:

B. 201 square inches