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Volume and Surface Area of Solids — MATHEMATICS STD 9 — Question

ICSE BoardEnglish MediumSTD 9MATHEMATICSVolume and Surface Area of Solids3 Marks
Question
Find the volume, the total surface area and the lateral surface area of a rectangular solid having:
(i) length = 8.5 m, breadth = 6.4 m and height = 50 cm.
(ii) length = 5.6 dm, breadth = 2.5 dm and height = 1 m.
✓

Answer

(i) $27.2 m^3, 123.7 m^2, 14.9 m^2$
(ii) $140 dm ^3, 190 dm ^2, 162 dm ^2$
[Hint. $1 m=10 dm$.]

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