Kayliereinkingh Kayliereinkingh

04-05-2017
Mathematics

contestada

The exact area of a circle is 81 pi square inches what are the radius and diameter of the circle

Respuesta :

greenie269 greenie269

07-05-2017

A=81pi
Since the formula for area is A=pi*r^2, you know that 81 was their "squared" answer.
Take the sq. rt. of 81, which is 9. this is your radius.
Diameter is always double your radius. 9+9=18.

Answer Link

Otras preguntas

Add the following fractions.3/8 + 5/12 =

Which one of the following is smallest in size ?N3- O2- F- Na

I forgot what are homophones.Does anyone know what's a homophone.

If the probability of giving birth to a boy is 0.52, what is the approximate probability of giving birth to 4 consecutive boys?

What are preventable injuries and unpreventable injuries

What is the correct term for a release of an ovum in the female reproductive system?

Bethany's dog eats 450 grams of food per day. How many kilograms does the dog eat in a week

a swimming pool holds 375,000 liters of water. two large hoses are used to fill the pool. the first hose fills at a rate of 1500 liters per hour and the second

Lane is 10 times Mels age. If the difference in their age is 27, how old is Mel?

In the top row of an chessboard, Tom writes the values 1, 2, 4, 8, 16, 32, 64, 128. In the leftmost column, Tom writes the values 1, 3, 9, 27, 81, 243, 729, 2