A solid pyramid is to be painted. If paint covers 2 m2/litre and total surface is 48 m2, how much paint is needed, including 5% extra for retouch?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 25.2 litres.
Paint needed (without extra) = = 24 litres
5% extra = 24 × = 25.2 litres