A company that manufactures storage bins for grains made a drawing of a silo. The silo has a conical base, as shown below: Which of the following could be used to calculate the total volume of grains that can be stored in the silo?

A. π(8.5ft)2(2ft) + one over three π(2ft)2(13ft − 8.5ft)
B. π(2ft)2(8.5ft) + one over three π(2ft)2(13ft − 8.5ft)
C. π(8.5ft)2(2ft) + one over three π(13ft − 8.5ft)2(2ft)
D. π(2ft)2(8.5ft) + one over threeπ(13ft − 8.5ft)2(2ft)

B. π(2ft)²(8.5ft) + one over three π(2ft)²(13ft − 8.5ft)

Step-by-step explanation:

total volume =

π.r².h1 + ⅓π.r².h2

= π(2ft)²(8.5ft) + ⅓π(2ft)²(13ft-8.5ft)

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)