SOLUTION: The diameters of the outer and inner shells of a semi circular right prism are 30m and 28m respectively. The lenght of the prism is 120m 1.Determine the area of the base in terms

Algebra.Com
Question 890366: The diameters of the outer and inner shells of a semi circular right prism are 30m and 28m respectively. The lenght of the prism is 120m
1.Determine the area of the base in terms of pie

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
The diameters of the outer and inner shells of a semi circular right prism are 30m and 28m respectively. The lenght of the prism is 120m
1.Determine the area of the base in terms of pie
--------------
r = 15 and 14
---
For a semi-circle, area = pi*r^2/2 (Notice it's the Greek letter pi, not the dessert, pie)
---
Area = pi*15^2 - pi*14^2 = 29pi sq meters
That's the area of the semi-circular base.
The length is not a factor.

RELATED QUESTIONS

How many feet of piping can be made from 5 cubic feet of iron if the outer and inner... (answered by josgarithmetic,ikleyn)
A Dutch windmill in the shape of the frustum of a right circular cone is 17 meters high. (answered by ikleyn)
A right circular cone is inscribed inside a larger right circular cone with a volume of... (answered by KMST)
a circular race course has an inner diameter of 318m and an outer diameter of 324m. What... (answered by Alan3354)
The adjoining figure shows the location of four flower beds in a park. If the outer... (answered by josgarithmetic)
The perimeter of a figure is the sum of the lengths of its sides. A circular fish pond... (answered by rothauserc)
The diameters of 2 circles are in the ratio 3:4 and the sum of their areas is equal to... (answered by ankor@dixie-net.com)
i need help with this problem. A paved, circular running track has an outer diameter of... (answered by ewatrrr)
Dear Math Tutor, A circular ring has a cross section. if outer radius is 22mm and the (answered by KMST)