A = 9 b = -5
45 = 4a + 2b +c
45 = 4(9) + 2(-5) + c
45 = 26 + c
19 = c
If we assume the pool to be a semi sphere, then the volume would be
<span>
V pool = 1/2 * [4/3*pi*r**(3)]
</span>where r is the radius = 50m
V pool = 1/2 * [4/3*3.14*50**(3)]
<span>
V pool = 261799.3878 m</span>³
If we round up >>> V water in the pool = 261800 m³<span>
</span>
The answer is 30 because u have to round 73 to 70 and 13 to 10 and in the middle of 10and 70 is 30
A and D are the correct answers
