What it means Changes inch to inches ?

 Inch is the singular form. One inch.  Half an inch.

Inches means more than one. One and a half inches. Two inches. 36 inches.

Step-by-step explanation:  

The -es added to the word makes it plural, more than one.  

This may be more about spelling or grammar than math.

18.8 cubic inches.

step-by-step explanation:

volume of a cone = πr²h

r = 1.5 inches

h = 8 inches

pi = 3.14

volume of our cone = × 3.14 × 1.5² × 8 = 18.84 square inches

or equals to 18.8 square inches rounded up to nearest tenth.

the correct answers i think are b. and d.

give me brainliest if it is correct!