Question

Lea made two candles in the shape of right rectangular prisms. The first candle is 15 cm high, 8 cm long, and 8 cm wide. The second candle is 5 cm taller but has the same length and width. How much additional wax was needed to make the taller candle?

Answer 1

15 times 8 times 8 equals 960
20 times 8 times 8 equals 1280
try to see if you can do the rest from what i have just showed you. :)