Question

PLS HELP ASAP the area of the circle is 64pi square cm what is the radius of the circle in cm

8 cm
9cm
6cm
16cm

Answer 1

Answer:

8cm

Step-by-step explanation:

$Here,\\\\Area(A)=64\pi cm^{2} \\Radius(r)=?\\\\As\:we\:have,\\\\\hookrightarrow Area=\pi r^{2} \\\\\hookrightarrow \frac{64\pi cm^{2} }{\pi } =r^{2} \\\hookrightarrow 64 cm^{2} =r^{2} \\\\\hookrightarrow \sqrt{64cm^{2} } =r\\\\\hookrightarrow 8cm=r\\\\\hookrightarrow r=8cm$

Answer 2

Answer:

$\huge\boxed{\bf{radius_{circle} = 8cm}}$

Step-by-step explanation:

Given:-

• $\tt Area_{circle} = 64\pi cm^2$

To find:-

• $\tt radius_{circle} = ?$

Ans:-

$\sf \to Area_{circle} = \pi*r^2$

$\sf \to 64\cancel{\pi} cm^2 = \cancel{\pi}*r^2$

$\sf \to 64cm^2 = r^2$

$\sf \to r = \sqrt{64cm^2}$

$\sf \to r = 8cm$

therefore $\tt radius_{circle}$ = 8cm

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