Answer:
=50.29
Step-by-step explanation:
The perimeter of a circle is also called the circumference
C = 2 * pi *r
25 1/7 = 2 * 22/7 *r
Rewriting as an improper fraction on the left
(25*7 +1)/7 = 44/7 *r
176/7 = 44/7 r
Multiplying each side by 7/44
7/44 *176/7 = 7/44 *44/7 r
4 = r
We can now find the area by
A = pi r^2
A = (22/7) * 4^2
A = 22/7 * 16
=352/7
Rounding to the nearest hundredth
=50.29
Answer: 15 is 25% of 60
Step-by-step explanation:
15/.25=60
Answer:
x=6
Step-by-step explanation:
We can use ratios to determine the value of x
x 9
------ = ----------
10 15
Using cross products
15x = 9*10
15x = 90
Divide each side by 15
15x/15 =90/15
x = 6
Answer:
Side length of a square game board is
11.916
inches.
Explanation:
If the area is
142
∈
2
, as area is square of side length of a square,
Side length is
√
142
=
11.916
inches.
Step-by-step explanation:
We can use a variable equation to solve this. Let A represent alan's age, B represent bob's age, and C represent Cindy's age. So Bob's age would be Alan's age - 5, or a -5 = B. Then Bob's age would be double Cindy's age, so that means 2 multiplied by Cindy's age = Bob's age, or 2C = B. Your two equations are:
A - 5 = B
2C = B
Also a third equation that helps is A + B + C = 20.
Finally, here are the ages.
Alan = 11 years old
Bob = 6 years old
Cindy = 3 years old.
PS: Sorry, I'm not that good at explaining things, but here are the answers
