3 years ago

The area of a circle is 49π in². What is the circumference, in inches? Express your answer in terms of \piπ.

Mathematics

1 answer:

MaRussiya [10]3 years ago

8 0

area of circle = π r²

π r²= 49 π

r²= 49 r= √49 r= 7

circumference of circle = 2 π r

= 2×7 × π

= 14 π

You might be interested in

What does 8.3 × 10^ -5 in standard notation

xz_007 [3.2K]

Answer:

0.000083

Step-by-step explanation:

When you multiply by 10^-5, you're really multiplying by 0.00001. This multiplied by 8.3 is 0.000083. It also means that you just move the decimal place in 8.3 to the left five times, where you'll get the same answer.

6 0

3 years ago

Warm Up

katrin [286]

Given the slope m and a point (a,b) of a line, its equation is given by

$y-b=m(x-a)$

In your case, a = -4, b = 7 and m=1/2, so we have

$y-7=\dfrac{1}{2}(x+4) \iff y=\dfrac{x}{2}+2+7\iff y=\dfrac{x}{2}+9$

6 0

3 years ago

An acid is prepared by mixing 400 mL of water and 100 mL of pure sulfuric acid. What is the

Natasha2012 [34]

C. 25
——-
Divide 400/100=4
——-
Than divide 4/100
—-

8 0

3 years ago

Hello i need help.....

raketka [301]

Ok, so the the answer is 1d + 2g.
Hope this helps :)

4 0

3 years ago

Help me! :( will appreciate any type of help

KengaRu [80]

Answer:32

Step-by-step explanation: (2+3x)= 98 then solve

8 0

2 years ago