-circumference is equal to pi×diameter, area is equal to pi×radius^2
-28.26÷3.14=9, 9÷2=4.5, 4.5×4.5=20.25, and 20.25×3.14=63.585
-rounded to the nearest hundredth, the answer is 63.59
For 27) D
For 28) A
Hope that helps!
Answer:
2 years : $280
10 years: $1400
Step-by-step explanation:
4(2x+5)-8 = 36
8x+20-8 = 36
8x = 24
x = 3
Surface area is:
6*8=48
12*10=120
8*12=96
6*12=72
48+72+120+96 = 336
The surface area is 336 square km
