The outer dimension of a jewellery box made of wood are 20 cm × 16 cm × 8 cm . The thickness of the wood is 1 cm .find the total cost of wood required to make the box , if 1 centimetre cube of wood costs ₹2.50
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Answered by
8
Given outer length = 10 cm Outer breadth = 8 cm Outer height = 7 cm Outer volume = length × breadth × height = 10 × 8 × 7 = 560 cm3 Thickness of wooden box, w = 1 cm Inner length = l – 2w = 10 – 2 = 8 cmInner breadth = b – 2w = 8 – 2 = 6 cmInner height = h – 2w = 7 – 2 = 5 cm Outer volume = 8 × 6 × 5 = 240 c m3 Volume of wood used = outer volume – inner volume = 560 – 240 = 320 cm3 Given cost of 1 cm3 of wood = Rs 2 Hence the total cost of wood required = Rs 2 × 32 = Rs 640
akhila1441:
plz check the question properly. It's not 10 , it's 20
Answered by
21
The total cost of wood required to make the box is Rs.2620
Step-by-step explanation:
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 =
Volume of wood used =
Cost of 1 cubic cm = Rs.2.5
Cost of 1048 cubic cm =
Hence the total cost of wood required to make the box is Rs.2620
#Learn more:
Outer dimension of a closed wooden box are 10 cm by 8 cm by 7 cm thickness of the wood is 1 cm find the total cost of wood required to make the box if 1 centimetre cube of wood cost to PS2
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