Which pair of numbers has a sum of 100?
A 57, 53
B 37, 53
C 47, 73
D 37, 63

D

Step-by-step explanation:

Add 30 and 60 and get 90 then add the leftover 7 and 3 which equals 10 now add both 90 and 10 which equals 100

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

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