3 years ago

#18-7: Find the radius of a circle that has an area of 4.5216 cm^2. Use 3.14 for pi.

1 answer:

8 0

Answer:

r = 1.2 cm

Step-by-step explanation:

Area (A) of a circle = πr²

r² = $\frac{A}{Pi}$

r = $\sqrt{\frac{A}{Pi} }$

r = $\sqrt{\frac{4.5216}{3.14} }$ = 1.2 cm

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