The volume of the pyramid shown in the figure centimeters. if the slant height of the pyramid increases by 4 centimeters and its height increases by 2 centimeters, the volume of the pyramid increases centimeters.
options; 9,15,21,63

options; 6,9,12,21

Part a) The volume of the original pyramid is

Part b) The volume of the pyramid increases by  

Step-by-step explanation:

we know that

The volume of the pyramid is equal to

where

B is the area of the base

h is the height of pyramid

see the attached figure to better understand the problem

Step 1

Find the volume of the original pyramid

the area of the base B is equal to

substitute

Step 2

Find the volume of the new pyramid

-------> the area of the base is the same

------> the height increase by

substitute

Subtract the original volume from the new volume

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.