Find the area of the following circle. (Round answer to the nearest whole number.) Circumference = 280 cm. (Hint: Find r from C
= 2πr (round r to tenths); then find area). 1) 89 2)560 3)1,989 4)6,246
2 answers:
Find r :
C=2πr
280=2(3.14)r
r=280/2(3.14)
r=44.6cm
find area :
A=πr²
A=3.14(44.6)²
A=6246 cm²
Answer : 4)6,246
Answer:
4)6,246
Step-by-step explanation:
First we will find the value of r.
The formula for circumference is C = 2πr:
280 = 2(3.14)r
280 = 6.28r
Divide each side by 6.28:
280/6.28 = 6.28r/6.28
44.6 ≈ r
The formula for the area of a circle is
A = πr²
Using our value for r, we have
A = 3.14(44.6)² = 6245.9624 ≈ 6246
You might be interested in
Answer:
A
Step-by-step explanation:
Hope this helped!
The constant variation for the relationship being shown is 4
5 pounds for 6.65 because you will get more pounds for a good amount of money.
Answer:
5/10
Step-by-step explanation:
Answer:
The answer is 120 degrees.
Step-by-step explanation:
