1.
EXERCISE 13.1
A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is opened at the
top. Ignoring the thickness of the plastic sheet, determine:
(i) The area of the sheet required for making the box
(ii) The cost of sheet for it, if a sheet measuring 1m' costs R$ 20,
Answers
Answered by
17
Step-by-step explanation:
Given:
Length of box =1.5 m, Breadth =1.25 m, Height =0.65 m
⇒Area to be white-washed = Area of cuboid − Area of base.
(i) Area of sheet requred =2lb+2bh+2lh−lb
Area of sheet requred =2lh+2bh+lb .....[Box is open]
=[2×1.5×0.65+2×1.25×0.65+1.5×1.25] m2
=(1.95+1.625+1.875)m2=5.45 m2
ii) Cost of sheet per m2 area = Rs. 20
Cost of sheet of 5.45m2 area = Rs. 5.45×20
= Rs. 109
i hope you understand this question by this solution
Answered by
2
Answer:
(i)5.45²
(ii)109
Step-by-step explanation:
(i)2hl+2hw+l×b
2×0.65×1.5+2×0.65×1.25+1.5×1.25=
5.45
(ii)5.45m²×20=109
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