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

What is 11/20 as a decimal and as a representation percent? Please answer fast thank you

Evaluate : (1296) 1/4

NEED IT ASAP!! I WILL MARK A BRAILIEST Lithium has one valence electron while Oxygen has six. If lithium atoms bond with oxygen atoms, what will be the corre

Which sequence best describes apoptosis at the G1 checkpoint?

glycogen physical properties

I’ll mark brainliest what’s 1228822882-1228822882?

Write the correct informal command and direct/indirect object pronouns, if necessary. Example: Comer un pizza= cómela Enseñarme

Which statement describes a unit rate? A.) Ben ate 1 hotdog. B.) Ben drove 20 miles. C.) Ben drove 45 miles per hour. D.) Ben ate 5 chips and 1 pickle.

Need Answer ASAP. Why do disruptive selection pressures tend to favor rapid evolutionary changes? a. They result in sudden gene frequency changes. b. They elimi

What is the function of the system that is composed of the white blood cells, bone marrow, thymus, lymph nodes, spleen, tonsils, and adenoids? O prevention of b