The dimensions of an open box are 52 cm, 40 cm and 29 cm. Its thickness is 2 cm. If 1 cm^3 of metal used in the box weighs 0.5 gms, the weight of the box is :
(A) 8.56 kg
(B) 7.76 kg
(C) 7.576 kg
(D) 6.832 kg
Answers
Answered by
10
Answer:
D. 6.832 kg
Step-by-step explanation:
Since the box is an open one, we have :
Internal length = (52 - 4) cm = 48 cm
Internal breadth = (40 - 4) cm = 36 cm
Internal depth = (29 - 2) cm = 27 cm
Volume of the metal used in the box :
= External volume - Internal volume
= [(52 × 40 × 29) - (48 × 36 × 27)] cm³
= (60320 - 46656) cm³
= 13664 cm³
∴ Weight of the box :
=(13664×0.51000) kg
=6.832 kg
Answered by
1
Answer:
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