Question

Pls help me answer the question ​

Answer 1

Answer:

Step-by-step explanation:

a box is a cuboidal object

therefore to varnish it from outside we have to find out the total surface area of the cuboid

and = 2(LB + BH + HL)     L = length, B = breadth H = height

now L = 50 cm, B = 40 cm, H = 30 cm

so, area = 2(50×40 + 40×30 + 30×50) = 2(2000 + 1200 + 1500)

            = 2(4700)

          =9400 cm²

cost of varnishing 1cm² = 5 paisa

cost of varnishing 9400cm² area = 5×9400 paise

                                                       = 47000 paise = 470 rs

Answer 2

Answer:

47000 P or 470 Rupees

Step-by-step explanation:

Here our box is in the shape of cuboid.

we have to paint the box outside.

so we have to find total surface area of that box.

i.e

Total surface area of Cuboid = 2(lb + bh + hl)

l = length

b = Breadth

h = height.

put the respective values in formulae.

= 2(50*40 + 40*30 + 30*50)

= 9400 Cm2

so we have to paint 9400 Cm2 area.

for 1 cm2 we pay 5 p

so for 9400cm2

we have to pay

9400 * 5 = 47000 P or 470 rupees.