Answer:
28.26
Step-by-step explanation:
To find the area of a circle you take pi times the radius squared (
)
And to find the radius you divide the diameter by two.
Answer:
30
Step-by-step explanation:
Use part/whole proportions. 10/25 (15 + 10) = 12/x. Multiply 12 times 25 (300) = 10x (10 times x). 300 = 10x, isolate x by dividing both sides by 10 and you get 30 = x.
Answer:
41/10
Explanation:
sqrt16 = 4
sqrt17 = 4.12
4.1 = 41/10 and 4<4.1<4.12
So this says
n*(-5/8)=-0.4
n(5/8)=0.4
n=0.4x8/5
n=16/25