Question

the length ,breadth and height of a closed box are respectively 2m ,1.5m and 80cm.what is the total area of canvas required to cover it up?also,find the cost of canvas if 1sqm of canvas cost Rs30.00

Answer 1

Total surface area = 2(Length x Breadth) + 2(Breadth x Height) + 2(Height x Length)

Find surface area :

Surface area = 2( 2 x 1.5) + 2(1.5 x 0.8) + 2(0.8 x 2)

Surface area = 6 + 2.4 + 3.2

Surface area = 11.6 m²

Find the cost:

1 m² = Rs 30.00

11.6 m² = 11.6 x 30 = Rs 348

Answer: The cost is Rs 348

Answer 2

ANSWER :-

₹ 348



EXPLAINATION :-

Let the total surface area be T.S.A

Firstly ,

We have to find T.S.A

=> 2(Length x Breadth) + 2(Breadth x Height) + 2(Height x Length)


Now ,

We have to find surface area

=> 2( 2 x 1.5) + 2(1.5 x 0.8) + 2(0.8 x 2)

=> 6 + 2.4 + 3.2

=> 11.6 m²


Now ,

We have to find the cost

1 m² = ₹ 30.00. ( GIVEN )

11.6 m² = ₹ ( 11.6 x 30 )

=> ₹ 348