Ask a New Question

The area of a circle with radius r given by the formula A = pi r^2. If a circle has area 81 pi square in inches, what is the radius?

1 answer

Square root of 81 = 9

Ask a New Question or answer this question.

Similar Questions

The area of a circle is given by the formula A+pier^2, where r is the radius. If increasing the radius of a circle by 1 inch
1. 2 answers
The area of a circle is given by the formula A = ðr2, where r is the radius. If increasing the radius of a circle by 1 inch
1. 1 answer
If you have a circle with an area of approximately 45 square feet, what is a good estimation for the radius of the circle?questi
1. 1 answer
The radius of this circle is 4 meters. Find the area of this circle.Leave your answer in terms of pi ( π ). *Remember the
1. 1 answer

more similar questions