Find the volume of the composite solid. Round your answer to the nearest tenth
1 answer:
Answer:
1130.4 cubic meters
Step-by-step explanation:
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My answer:
The composite solid has two cones:
- The height of the big cone is: 12 m
- The height of the small cone is: 18
- The radius of the common base of the two cones is: 6 m
=> the volume of the big cone is:
V = (1/3)π·h = (1/3)*3.14*
*18 = 678.24 cubic meters
=> the volume of the small cone is:
V = (1/3)π·h = (1/3)*3.14*
*12 = 452.16 cubic meters
=> the volume of the composite solid :
= 678.24 + 452.16
=1130.4 cubic meters
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Answer:
The number of students who prefer chocolate milk is 780 .
Step-by-step explanation:
Given as :
The total number of students in the school = 1200
The percentage of students who prefer plain white milk = 35 %
Let the number of students who prefer chocolate milk = x
Now, ∵ The percentage of students who prefer plain white milk = 35 %
∴ The percentage of students who prefer chocolate milk = 100 % - 35 % = 65%
So , As The number of students who prefer chocolate milk = x
Or, 65 % of total number of students in school = x
So, x = × 1200
or, x =
∴ x = 780
So, the number of students who prefer chocolate milk = x = 780
And students who prefer plain white milk = 1200 - x = 1200 - 780 = 420
Hence, The number of students who prefer chocolate milk is 780 . Answer