Area of the square is 144m.
Area of the circle is 113.1m.
Subtract A of circle from A of Square which equals 30.9meters. That is your answer.
If you want I can teach you step by step just comment if you want me to...
Well you have to subtract. i think you have to do 15-10% which is 14.9
The answer to this is step 2 because they multiplied when they should of subtracted the 10 and the 12.
Area of circle = π · r²
9 π = π · r²
9 = r²
3 = r
Volume of sphere = (4/3)π · r³
= (4/3)π · (3)³
= 4π · 3²
= 4π · 9
= 36π
Answer: the volume of the sphere is 36π
Origina Price = $240
Mark Up percentage = 15%
(15/100)*240
= $36
new price = $240 + $36
= $276