Question

The triangular roof section of a house is to be painted. It measures 8.8m at the base and is 4.6m high. if one liter of paint covers 4 square meters, how much is needed to give this roof section three coats of paint

Answer 1

Answer:

Step-by-step explanation:

Since the roof is triangular, we would the amount of paint required by determining the surface area of the roof. We would apply the formula for determining the area of a triangle which is expressed as

Area = 1/2 × base × height

From the information given,

Height = 4.6m

Base = 8.8m

Surface area = 1/2 × 8.8 × 4.6 = 20.24m²

if one liter of paint covers 4 square meters, then the amount of paint needed to cover 20.24m² is

20.24/4 = 5.06 liters

It means that 5.06 litres would be required for one coat of paint. The number of litres required for three coats of paint is

5.06 × 3 = 15.18 litres