find the volume of a pyramid whose base is 6ft by 5ft and has an 8ft height
a. 50 ft3
b. 60 ft3
c. 70 ft3
d. 80 ft3
http://www.mathsisfun.com/geometry/pyramids.html
Right!
To find the volume of a pyramid, you can use the formula:
Volume = (1/3) * Base Area * Height
In this case, the base of the pyramid is a rectangle with dimensions 6ft by 5ft. Hence, the base area is:
Base Area = Length * Width = (6ft) * (5ft) = 30ft²
The height of the pyramid is given as 8ft.
Now substitute the values into the formula:
Volume = (1/3) * Base Area * Height
= (1/3) * (30ft²) * (8ft)
= (1/3) * 240ft³
= 80ft³
So, the volume of the pyramid is 80 ft³.
Therefore, the correct answer is d. 80 ft³.
To find the volume of a pyramid, you can use the formula: V = (1/3) * base area * height.
In this case, the base of the pyramid is a rectangle with dimensions 6ft by 5ft, so the base area can be calculated as base area = 6ft * 5ft = 30ft^2.
The height of the pyramid is given as 8ft.
Now, substitute the values into the formula:
V = (1/3) * 30ft^2 * 8ft
V = (1/3) * 240ft^3
V = 80ft^3
So, the volume of the pyramid is 80 ft^3.
Therefore, the correct answer is (d) 80 ft^3.