Question

A blackboard of length 5 m 20 cm and breadth 3 m 40 cm is to be painted.

Find the cost at the rate of ₹ 10 per square meter.​

Answer 1

Answer:

hey here is ur answer

pls mark me as brainliest

Step-by-step explanation:

so now first convert cm to m

so 1m=100 cm

so 20 cm =20/100 m

ie 0.2 m

similarly

40 cm=0.4 m

now area of blackboard=5×0.2×3×0.4

so we get 1.2 metre square

so just multiply 1.2×10

ie 12 rupees

hence the cost is 12 rs