Answer:

A=78.5dm^2

A=pi x r^2

78.5= 3.14 x r^2

r^2=25

radius=5dm

Step-by-step explanation:

hope it's help

Problem:

Carlo has a circular window with an area of approximately 78.5 sq dm. What is the radius of the window?

Formula:

Area of Circle = πr²

Given:

• Area of Circle ≈ 78.5 sq. dm

Solution:

Hence, the radius of the window is 5 dm.

Final Answer:

5 dm