Answer:
356.53
Step-by-step explanation:
Calculate the semicircle and square areas separately. For the semicircle, A = πr²/2, so 100.53
And for the square, A = a², so 256
Hope this helps
4860 in ^3
First we find the volume of the tank
V = l*w*h
V = 30*12*15
V = 5400 in ^3
It is 90% full so we multiply by 90 %
5400 * 90%
5400 * .90
Population in 1950 was 4,100,000
Equation: 5x + 2,000,000 = 22,500,000
Subtract 2,000,000 from each side: 5x = 20,500,000
Divide each side by 5: x = 4,100,000
I hope this helps, please mark Brainliest, thank you!