zoestersoliel zoestersoliel
  • 26-02-2019
  • Mathematics
contestada

HELPP PLEASE ASAP!
The circumference of a circle is 7pi m

What is the area of the circle?

A)3.5pi m^2
B)12.25pi m^2
C)14pi m^2
D)49pi m^2

Respuesta :

znk
znk znk
  • 26-02-2019

Answer:

B) 12.25πm²  

Step-by-step explanation:

The formula for the circumference of a circle is

C = 2πr

The circumference of your circle is

C = 7πm

If we factor out a 2 from the 7, we get

C = (2 × 3.5)πm = 2π(3.5m)

Now, if we compare the two formulas, we see that

r = 3.5m

The formula for the area of a circle is

A = πr²

If r = 3.5m, then the area of your circle is

A = π(3.5m)² = 12.25πm²

Answer Link

Otras preguntas

Dan's stamp book has 2 pages with 4 rows of stamps on each page.  Each row has 2 stamps.  How many stamps are on these pages of Dan's stamp book?
The Lees have 3 children. The oldest is twice as old as the youngest. The middle is 5 years older than the youngest. If the sum of the age is 57, how old is eac
how many atoms are there in 1.3 x 10^22 molecules of N(O)2
Three more than the quotient of a number and two is 7
What is it called when two ratios have the same value when simplified?
Calculate the surface area of a cube with side measurement of 3.2 inches?
If your vehicle has an EFI system, A. press down on the accelerator before starting your engine. B. press down on the accelerator while starting your engine
a rug covers 1/4 of the floor.The area of the rug is 10ft what is the area of the floor?
How to write 4/50 as a decimal
What shape has only 1 pair of parallel line