A is 23 and the answer to b is 77
Answer:
132 cm
Step-by-step explanation:
pie = 22/7
42 times 22/7 = 132cm
29.87 should be it hopefully
Assuming R and H:
So volume is pir^2 * H = 1500 and H = 1500/(pir^2) while surface area is A= 2pir*H + 2pir^2
A = 2pir(r+h)= 2piR^2 + 2pir*1500/(pir^2)= 2piR^2 + 3000/r
For A to take minimum, get the derivative 4pir - 3000/R^2 and let it be 0
4pir^3 - 3000 = 0
r = cbrt(3000/(4pi)) ≈ 6.20
h = 1500/(pi(6.20)^2) ≈ 12.42
<u>Answer:</u>
3/5
<u>Step-by-step explanation:</u>
We are to find the similarity ratio of a cube with volume
to a cube with volume
.
We know the formula for the ratio of two cubes:
where
is the similarity ratio of the two cubes.
Substituting the given values in the formula to find
:




Therefore, the similarity ratio of the two cubes is 3/5.