The volume of a cone is (1/3) that of its similar cylinder.
Thus the volume of the cone B would be:
X = -2 and -5
You can set both equal to 0 to find the answers.
The answer is B.
remember to use the reciprocal when dividing with fractions
2 for the whole number and 2/1 for the fraction
Triangle: 13.3 km Why: the formula is 1/2 base x height.
Square: 57.4 Why: 7x8.2 which equals 57.4