Question

a rectangular sheet of aluminium has dimensions 65 cm into 40 cm find its cost of his cost of Aluminium is Rs 20 per square metre

Answer 1

Convert all cm to m:

65 cm = 0.65 m

40 cm = 0.40 m

Find the area:

Area = 0.65 x 0.4 = 0.26 m²

Find the cost of the Aluminium:

1 m² = Rs 20

0.26 m² = 20 x 0.26 = Rs 5.20

Answer: The cost is Rs 5.20

Answer 2

hello

here is your answer

given length = 65 cm , breadth = 40 cm

changing cm to m --

we know 1 metre = 100 cm.

65 cm = 65/100 = 0.65 m

40 cm = 40/100 = 0 40 m

finding area --

area = length x breadth

= 0.65 x 0.40 = 0.26 m^2

finding the cost of aluminium sheet

per square metre = rs 20

0.26 square metre = 0.26x20= rs 5.20

hence required answer is rupees 5.20

hope it helps you..