Lalagrl Lalagrl

21-05-2019
Mathematics

contestada

Find the exact circumference of a circle with an approximate area of 78.5 square feet.

Respuesta :

quasarJose quasarJose

21-05-2019

Answer:

31.41ft

Step-by-step explanation:

the area A of a circle is πr² = 78.5 square feet

3.1416* r² = 78.5

r² =78.5/3.1416 = 24.987

r = √24.987 = 4.999ft

the circumference C of a circle is 2πr

C = 2* 3.1416 * 4.999 = 31.41ft

Answer Link

Otras preguntas

3 and 1/4 times -2 and 3/5? Answers: A. -8 9/20 B. -6 and 3/20 C. 6 and 3/20 D. 8 and 9/20

The planet we call Earth has how many main layers

what is the slope of the graph of 4x-16y=15

What is a synonmyn for coat

what is the answer for 6r^2-10r-24

what does asterisk mean

what value of z makes the equation true? 7/8=z/32 Answers: A. 7 B. 8 C. 14 D. 28

Which pronoun best completes the sentence? How is the pronoun used? __________ and Ginny are looking for a ride to the picnic. A. He; predicate nominative

The return of salmon to their own birthplace to breed is an example of (A) habituation. (B) a stimulus. (C) operant conditioning. (D) reasoned behavior. (E) imp

how did innovation in industry, travel and communication change the lives of American in the 1800s