autumnpicaa autumnpicaa
  • 14-05-2018
  • Mathematics
contestada

The area of a circular pool is 314 square feet. Write and solve an equation to find the diameter of the pool cover.

Respuesta :

Americ
Americ Americ
  • 21-05-2018
STEP 1:
Use the area of a circle formula to first calculate the radius.

A= πr^2
plug in known numbers

314= (3.14)r^2
divide both sides by 3.14

100= r^2
take square root of both sides

10 feet= r


STEP 2:
find the diameter

Diameter= 2 * radius

D= 2 * 10
D= 20 feet


CHECK:
A= (3.14)(10)^2
A= (3.14)(100)
A= 314 feet squared


ANSWER: The diameter is 20 feet.

Hope this helps! :)
Answer Link

Otras preguntas

Identify the process that represents how organisms grow and replace old or damaged cell.
Which sentence is correct? A. I turned off all the lights so the electric bill would be lower. B. I ride the bus so I can save gas money. C. The bus broke down,
Describe and account for the changes in the American presidency between 1960 and 1975, as symbolized by Kennedy’s “Camelot”, Johnson’s Great Society, and Nixon’
for f(x)=x+3 and g(x)=4x+5 find the following functions(simplify answers) (f*g)(x)= (g*f)(x)= (f*g)(-1)=
How do you tell if a caterpillar is a boy or girl?
In the early 19th century, Americans sought to resolve their political disputes through compromise, yet by 1860 this no longer seemed possible. Analyze the reas
2x+y=20 6x-5y=12 substitution
How do you tell if a caterpillar is a boy or girl?
In the 2000 election, California had the A.most electoral votes and selected George Bush for president B.least electoral votes and selected Al Gore for presiden
what is 21% of 30.00