a closed box made of wood of uniform thickness has length, breadth, height 12cm,10cm,8cm respectively. If the thickness of the wood is 1cm,then the inner surface area is
Answers
Given : a closed box made of wood of uniform thickness has length, breadth, height 12cm,10cm,8cm respectively.
the thickness of the wood is 1cm,
To Find : the inner surface area
Solution:
outer dimensions 12 cm , 10 cm and 8 cm
Inner dimensions
12 - 2 x 1 = 10 cm
10 - 2 x 1 = 8 cm
8 - 2 x 1 = 6 cm
Surface area = 2 ( lb + bh + lh )
= 2 ( 10 * 8 + 8 * 6 + 10 * 6)
= 2( 80 + 48 + 60)
= 2( 188)
= 376 cm²
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Given :
a closed box made of wood of uniform thickness has length, breadth, height 12cm,10cm,8cm respectively.
the thickness of the wood is 1cm,
To Find :
the inner surface area
Solution:
outer dimensions 12 cm , 10 cm and 8 cm
Inner dimensions
12 - 2 x 1 = 10 cm
10 - 2 x 1 = 8 cm
8 - 2 x 1 = 6 cm
Surface area = 2 ( lb + bh + lh )
= 2 ( 10 * 8 + 8 * 6 + 10 * 6)
= 2( 80 + 48 + 60)
= 2( 188)
= 376 cm²
❥︎Hope it helps