Question

a. what is the volume of box?
b. how much area did Suresh paint?
c. how much area did deepak paint?
d. what amount did harsh charge?
e. what amount did veena pay for painting?​

Answer 1

SOLUTION

GIVEN

Veena planned to make a jewellery box to gift her friend Reeta on her marriage. She made the jewellery box of wood in the shape of a cuboid. The jewellery box has the the dimensions as shown in the figure below. The rate of painting the exterior of the box is Rs. 2 per cm². After making the box she took help from his friends to decorate 5he box. The blue was painted by Deepak , black by Suresh, green by Harsh and the yellow was painted by Naresh.

TO DETERMINE

a. The volume of box

b. The area Suresh painted

c. The area Deepak painted

d. The amount Harsh charged

e. The amount Veena paid for painting

EVALUATION

a. Here the dimension of the box is

Length = 40 cm , Breadth = 30 cm , Width = 20 cm

Hence the required volume of box

= 40 cm × 30 cm × 20 cm

$= \sf{24000 \: \: {cm}^{3} }$

b. The black area was painted by Suresh

Dimension is Length = 40 cm , Breadth = 30 cm

Hence the area Suresh painted

= 40 cm × 30 cm

$\sf{ = 1200 \: \: {cm}^{2} }$

c. The blue was painted by Deepak

Dimension is Length = 30 cm and breadth = 20 cm

One side of the area Deepak painted

= 30 cm × 20 cm

$= \sf{600 \: \: {cm}^{2} }$

Total area Deepak painted

$= \sf{2 \times 600 \: \: {cm}^{2} }$

$= \sf{1200\: \: {cm}^{2} }$

d. The green was painted by Harsh

Dimension is Length = 40 cm and breadth = 20 cm

The area Harsh painted

= 40 cm × 20 cm

$\sf{ = 800 \: \: {cm}^{2} }$

Hence the amount Harsh charged

= Rs 2 × 800

= Rs 1600

e. The amount Veena paid for painting

= Rs ( 2400 + 2400 + 1600 + 1600 )

= Rs 8000

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