ththe outer dimension of a jewellery box is equals to 20 cm into 16 cm and 8 cm the thickness of the wood is 1 cm find the total cost of wood required to make a box is 1 centimetre cube of wood cost 2.55
Answers
inner length = 20-1×2
inner length = 18cm
inner breath = 16-1×2
inner breath = 14cm
inner height = 8-1×2
inner height = 6cm
external dimensions = l×b×h
external dimensions= 20×16×8
solve multiply
inner dimensions = l×b×h
inner dimensions = 18×14×6
solve multiply
then subtract external dimensions - inner dimensions
jitna aayga usko 2.55 se multiply kr Dena answer aa jayega
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Answer:
Outer length of box = 20 cm
Outer breadth of box = 16 cm
Outer height of box = 8 cm
The thickness of the wood is 1 cm .
So, Inner length of box = 20 -(1+1)=18 cm
Inner breadth of box = 16-(1+1)=14 cm
Inner height of box = 8-(1+1)=6 cm
Volume of wood used = Outer volume - Inner volume
Volume of wood used = (20 \times 16 \times 8)-(18 \times 14 \times 6)(20×16×8)−(18×14×6)
Volume of wood used =1048 cm^31048cm
3
Cost of 1 cubic cm = Rs.2.5
Cost of 1048 cubic cm = 1048 \times 2.5 = Rs.26201048×2.5=Rs.2620
Hence the total cost of wood required to make the box is Rs.2620