Question

1 which expression represents the area of a circle with a radius of 7 units? a 7·2·π b 7·7·π c 7·π·π d 3.5·3.5·π

Explanation:

Step1: Recall the formula for the area of 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 into the formula

Given \(r = 7\) units. Then \(r^{2}=7\times7\). Substituting into the formula \(A=\pi r^{2}\), we get \(A = 7\times7\times\pi\).

Answer:

B. \(7\cdot7\cdot\pi\)