Question

15. (01.01)

What is the value of the radius of the following circle with an area of 154 cm2? (1 point)
Area

154 cm^2

*4.9 cm
*7.0 cm
*25 cm
*68 cm​

Answer 1

The answer is option B

Explanation:

Area of a circle = πr²

where

r is the radius of the circle

From the question

Area = 154cm²

To find the radius substitute this value into the above formula and solve for the radius

That's

154 = πr²

Divide both sides by π

We have

`{r}^(2) = (154)/(\pi)`

Find the square root of both sides

Thats

`r = \sqrt{ (154)/(\pi) }`

r = 7.0014086

We have the final answer as

radius = 7.0 cm

Hope this helps you