Melissa bought 4 books from the school book fair with $20. If Melissa got $3.72 in change, what was the average cost of each book?

$4.07 per book

Step-by-step explanation:

Subtract change from the total paid to find out price of books ($20-$3.72=16.28)

Divide the cost of all books by the number of books ($16.28÷4=$4.07)

Each book cost an average of $4.07

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.