Question

A cardboard is 4.5 m long and 3.5 m wide. what is the cost of painting it on both the sides at the rate of RS-1.25 per square metre?

Answer 1

Given : cardboard is 4.5 m long and 3.5 m wide.

rate of Painting Rs-1.25 per square metre

To Find : what is the cost of painting it on both the sides

Solution:

cardboard is 4.5 m long and 3.5 m wide.

Area of one side = 4.5 * 3.5

= 15.75 m²

Area of both sides = 2 * 15.75 =  31.5 m²

rate of Painting Rs 1.25 per square meter

Area = 31.5  m²

cost of painting  = Rate * area

=  1.25  * 31.5

= 39.375  Rs

cost of painting  = Rs  39.375

Learn More:

There is some water in a cylindrical vessel of base diameter 14

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after the surface area of cube is painted the cube is cut into 64

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Answer 2

Answer:

39.38

Step-by-step explanation:

Step-by-step explanation:Length =4.5 m

Step-by-step explanation:Length =4.5 m breadth=3.5 m

Step-by-step explanation:Length =4.5 m breadth=3.5 m4.5 =4.5×10=45

Step-by-step explanation:Length =4.5 m breadth=3.5 m4.5 =4.5×10=453.5=3.5×10=35

Step-by-step explanation:Length =4.5 m breadth=3.5 m4.5 =4.5×10=453.5=3.5×10=35Area= length/breadth

Step-by-step explanation:Length =4.5 m breadth=3.5 m4.5 =4.5×10=453.5=3.5×10=35Area= length/breadth45/35=9/7

1.25=1.25×100=125

9/7×125=175