The volume of the frustum of a regular triangular pyramid is 135 cu.m. The lower base is an equilateral triangle with an edge of 9 cm. The upper base is 8 m above the lower base. What is the upper ...
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A cylinder has a height of 10 and a surface area of 78π. Find the radius and volume of this cylinder.
The distance between Port A and Port B is 9 nm. If a boat travels at 18 knots to Port B and returns back to Port A at 15 knots, what is the average speed for the whole journey? Note: ...
Determine the kind of triangle formed with vertices at A(2,-1), B(3,4), C(-7, 6).