Answer:
The volume of the solid is
Step-by-step explanation:
1. Cylinder
For find the volume of a cylinder we use the next formula:
Then the volume of the cylinder is equal to
2. Cones
For find the volume of a cone we use the next formula:
However there are two cones so we have to multiply the volume of one cone for two and we get the total volume for the cones which is
3. Sum of the volumes
Finally we sum the volumes of the cylinder and the cones for get the final result
So approximating the result is
The volume of the cylinder 1,570 square meter. This is calculated using the formula volume is equal to height times Pi times radius squared. We first solve the radius which is 5 meters times 4 equals to 20 meters, this is the diameter of cylinder. But we need the radius, so 20 meters divided by 2 is equals to 10. Then substituting the given figure to the formula, Volume = 5 (3.14) (10), it will give us 1,570 square meter.
Answer:
49/4 is the answer
Step-by-step explanation:
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Answer: the minimum number of males over age 25 they must include in their sample n = 306
Step-by-step explanation:
Given;
Mean of milk consumption = 2.5litres
Maximum error E = 0.07
Variance S = 1.21 litres
Confidence interval of 85%
Z' = t(0.075)= 1.44
the minimum number of males over age 25 they must include in their sample = n
n = (Z'×S/E)^2
n = ( 1.44 × 0.85/0.07)^2
n = (17.4857)^2
n = 305.75
n = 306