Find the length of the base of a square pyramid if the volume is 128 cubic inches and has a height of 6 inches. use 3.14 for pi and round your answer to the nearest hundredth.
a. 4 inches
b. 8 inches
c. 16 inches
d. 24 inches

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116