Answer:
Volume of hemisphere=
<u>
</u>
<u>Volume</u><u> </u><u>of</u><u> </u><u>sphere</u><u>=</u><u> </u>
<u>
</u>
Step-by-step explanation:

Using calculator=
1072.761905
Round to the nearest tenth=
1072.8
You have to explain how you knew to use 55 and 120, not another option.
Hope it helped! :)
A + b = 15 ..... eq 1
a – b = 12 ...... eq 2
So a = 15 – b
Substitute in eq 2 :
15 – b – b = 12
15 – 2b = 12
–2b = 12 – 15
b = 1.5
So a = 15 – 3/2 = 13.5
4ab = 4 x 13.5 x 1.5 = 81
Answer:
Expression
Step-by-step explanation:
2,3, and 7 are coefficient .
x and y are constant
To work out the circumference of a circle, you should use 2πr or πd (r being radius and d being diameter)
So
Circumference = 13.5 x π = 27/2 π = 42.41 inches