Question

a wall is 4.5 m long and 2m high.Find the cost of white-washing on both sides if the cost of white washing is₹7.50 per square metre​

Answer 1

hi mates

your answer

l=4.5m

h=b=2m

area of wall=lb

$= 4.5 \times 2 = 9m {}^{2}$

cost of washing per sq metre=₹7.50

cost of washing 9sq metre=

$= 7.50 \times 9 \\ = 67.50$