Question

Find the volume of a specified cone. use 3.14 for pie, and round your answer to the nearest whole number. diameter = 5 cm height = 7 cm

a. 73 cu. cm
b. 46 cu. cm
c. 275 cu. cm
d. 183 cu. cm

Answer 1

V = `1/3 * πr² * h

The half of a diameter is the radius. So, r = d/2. Substituting the values

V = 1/3 * (3.14)(5/2)² * 7
V = 45.79 or 46 cm³

The answer is letter B.

Answer 2

the formula of finding volume of a cone is 3.14 r squared x h/3
so our volume is 3.14 x 2.5 x 2.5x 7/3= 46 cu.cm