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

Question

anonymous · Answer

So, let's do this problem by simplifying first. We know that the taller candle is 20cm tall and that the other dimensions are the same. Thus, the added wax is a 5cm high by 8cm long by 8 cm wide chunk. We can calculate it's volume by the formula Volume = Area*Base*height.

anonymous · Answer

wait i still dont understand

anonymous · Answer

Alright, the question is asking how much ADDITIONAL wax was needed to make a candle. The answer will be a volume as a candle is a 3 dimensional object.

The question states: That this second candle is 5cm higher but has the same length and width. Thus, this candle has 5cm MORE height then the other. So to caculate the amount of wax in this ADDITIONAL section, we find the volume of it. It is 5cm tall by 8 cm long and 8cm wide. 5*8*8 = 320 cm^3 more wax.

anonymous · Answer

oh ok thank you so much i understand it now