Answer:
384
Step-by-step explanation:
Cross multiply and you get 384.
a.
This question is a rather odd way to ask you to find the radius of a circle from its area.
A = π r²
40000 = π r²
r² = 40000/π
r = √(40000/π)
r ≈ 112.8379
Answer: 113 miles
b.
C = 2 π r
754 = 2 π r
r = 754/2π = 377/π
A = π r² = A = π (377/π)² = 377²/π
A ≈ 45241.0658
Answer: 45241 square miles
I = PRT/100
100I = PRT
P= 100I÷RT
P = 100I/RT
Step-by-step explanation:
5x+23=0
5x=23
x=23-5
(x=7)
Front yard
65+65+45+45=220
Back yard
45+45+35+35=160
220+160=380
380 feet
