The external dimensions of a closed wooden box are 27 cm, 19 cm and 11 cm. if the thickness of the wood in the box is 1.5 cm;find: A. volume of the wood in the box .B. The cost of the box ,if wood cost rupees 1.20 per cm cubic.
Answers
Given : The external dimensions of a closed wooden box are 27 cm, 19 cm and 11 cm.
the thickness of the wood in the box is 1.5 cm
To find:
A. volume of the wood in the box .
B. The cost of the box ,if wood cost rupees 1.20 per cm cubic.
Solution:
external dimensions of a closed wooden box are 27 cm, 19 cm and 11 cm.
=> Volume = 27 x 19 x 11
= 5643 cm³
thickness of the wood in the box is 1.5 cm
internal dimensions
27 - 2* 1.5 = 24 cm
19 - 2 * 1.5 = 16 cm
11 - 2 * 1.5 = 8 cm
Internal Volume = 24 x 16 x 8
= 3072 cm³
Volume of the wood in the box = 5643 - 3072 = 2571 cm³
cost of the box = 2571 * 1.2
= 3,085.2 Rs
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