Read the Source/Text given below and answer any four questions:
Veene 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 dimensions as shown in the figure below. The
rate or painting the exterior of the box is Rs 2 per cm2. After making the box
she took help from his friends to decorate the box
The blue colour was painted by Deepak, Black by Suresh. groen by Harsh
and the yellow was painted by Naresh.
* What is the volume of the box?
a 24000 cm
b. 1200 cm
C. 800 cm-
d 600 cm
ii. How much aree did Suresh paint?
a 24000 cm:
b 1200 cm
© 800 cm:
d 600 cm?
in How much area did Deepak paint?
a. 24000 cm-
b. 600 cm
C BOO cm-
d. 1200 cm-
'iv What amount did Harsh charge?
a RS 800
o RS 1200
C RS 1600
des 2000
V. What amount did Veena pay for painting?
a RS ZOOG
FS5200
Rs 5000
RS 6600
Answers
Answer:
1. 24000cm3
2. 800cm2
3. 600cm2
4. ₹1600
5. ₹5200
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 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 the box. The blue colour was painted by Deepak, Black by Suresh, green by Harsh and the yellow was painted by Naresh.
To Find :-
(i) What is the volume of box ?
(ii)How much area did Suresh paint ?
(iii) How much area did Deepak paint ?
(iv) What amount did Harsh charge?
(v) What amount did Veena pay for painting ?
Solution :-
from image we get,
- Length of cuboid box = 40 cm .
- Breadth = 30 cm.
- Height = 20 cm.
then,
→ Volume of box = Length * Breadth * height = 40 * 30 * 20 = 24000 cm³. (Ans i)
now,
→ Area Painted by Suresh = Black colour = Area of AGHB = 40 * 30 = 1200 cm². (Ans ii)
and,
→ Area Painted by Deepak = Blue colour = Area of FEGH + Area of ABDC = 30 * 20 + 30 * 20 = 600 + 600 = 1200 cm². (Ans iii)
and,
→ Area Painted by Harsh = Green colour = Area of ACFG = 40 * 20 = 800 cm².
then,
→ The amount Harsh charged = 800 * 2 = Rs. 1600 (Ans iv)
therefore,
→ Total amount Veena Paid for painting = 2 * 1200(Black) + 2 * 1200(Blue) + 1600(Green) + 2 * 800(Yellow) = 2400 + 2400 + 1600 + 1600 = Rs.8000 (Ans. v)
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