Question

what is the approximate area of the circle shown below? a. 278 cm² b. 69 cm² c. 29.5 cm² d. 59 cm²

Explanation:

Step1: Recall area formula

The formula for the area of a circle is $A = \pi r^{2}$, where $r$ is the radius of the circle. Here $r = 4.7$ cm (assuming the value shown is the radius, if it's diameter, divide by 2). Let's assume the value 9.4 cm is the diameter, so $r=\frac{9.4}{2}=4.7$ cm.

Step2: Substitute and calculate

Substitute $r = 4.7$ into the formula: $A=\pi\times(4.7)^{2}=\pi\times22.09$. Taking $\pi\approx 3.14$, we have $A\approx3.14\times22.09 = 69.3626\approx69$ $cm^{2}$.

Answer:

B. 69 $cm^{2}$