A plastic box 1.5 m long, 1.25m 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 1m² costs Rs 20.
mracnectively. Find the
Answers
Answered by
3
Step-by-step explanation:
csa + lb
2×(l+b)×h + lb
2×(150+ 125) × 65 + 150×125
2× 275×65 + 18750
35750+ 18750
54500
in m ^2 = 54500/10000=5.45
cost of sheet is 5.45 × 20 = 109
Answered by
1
Answer:
given
L= 1.5m
b= 1.25m
h= 65cm convert into metre 0.65m
I) the box is open at the top area of sheet required = L. S. A + area of base
=2h (l+b)+ ( L )( b )
=2(0.65) (1.5+1.25)+ (1.5) (1.25)
=1.30 (2.75)+(1.875)
=3.575 + 1.875
=5.45 m²
II) the cost of sheet required= area of sheet * cost of measuring 1 m2
=5.45 * 20
=109
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