alleryA suitcase 80 × 48 × 24 cm is covered with cloth 96 cm wide. How many metres are needed for 100 such suitcases?
A72 m
B144 m
C288 m
D14.4 m
Answer & Solution
Correct answer: B. 144 m
1. TSA of one = 2(3840 + 1152 + 1920) = 13824 cm2.
2. For 100 suitcases the area is 1,382,400 cm2.
3. Length = 1,382,400 ÷ 96 = 14400 cm = 144 m.
_Source: NCERT Class 8 Mathematics, Chapter 9 Mensuration, Exercise 9.2_
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