A closed box is a cuboid in shape with
length = 40 cm, breadth = 30 cm and
height = 50 cm. It is made of thin metal
sheet. Find the cost of metal sheets required
to make 20 such boxes, if 1 m2 of metal sheet
costs 45.
Answers
Step-by-step explanation:
l=40 cm, b=30 cm, h=50 cm
Surface area of 1 block = 2[lb+bh+lh]
= 2[40*30+30*50+50*40]
= 2[1200+1500+2000]
= 2[4700]
= 9400 cm^2
SA of 20 blocks = 20*9400 = 188000 cm^2 = 18.8 m^2
Cost = 18.8*45 = 846
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Answer:
Step-by-step explanation:
Given:-
A closed box is a cuboid in shape with
A closed box is a cuboid in shape withlength = 40 cm, breadth = 30 cm and
A closed box is a cuboid in shape withlength = 40 cm, breadth = 30 cm andheight = 50 cm. It is made of thin metal
A closed box is a cuboid in shape withlength = 40 cm, breadth = 30 cm andheight = 50 cm. It is made of thin metalsheet.
To find:-
Find the cost of metal sheets required
Find the cost of metal sheets requiredto make 20 such boxes, if 1 m2 of metal sheet
Find the cost of metal sheets requiredto make 20 such boxes, if 1 m2 of metal sheetcosts 45.
Solution:-
Dimensions of the given cuboid are
Length=40cm
Breadth=30cm
Height =50 cm
To make a cuboid with metal sheet we use it for all dimensions
so thae area of the metal sheet required is
The total area of the cuboid
=2(lb+bh+hl) sq units
=>2[(40×30)+(30×50)+(50×40)] sq.cm
=>2(1200+1500+2000)sq.cm
=>2(4700) sq.cm
=>9400 sq.cm
Total surface area of one cuboid =9400 sq.cm
Total area of such 20 cuboids=9400×20
=>188000 sqcm
we know that 10000 sqcm=1 sq.m.
=>188000sq.cm=188000/10000=18.8 sq.m
The cost for making cuboid per 1 m²=Rs.45
Total cost for making 20 cuboids of 18.8 m²=
=18.8×45
=Rs.846
Answer:-
The total cost of metal sheets required
cost of metal sheets requiredto make 20 such boxes, if 1 m² of metal sheet
of metal sheet costs 45 is Rs.846
Used formulae:-
Total surface area of a cuboid
=2(lb+bh+hl) sq.units
1m²=10000 cm²