Mensurationhard · Past Paper
The sum of the length, breadth, and height of a cuboid is 19 cm and the length of its diagonal is 11 cm. Find its total surface area.
A240 sq. cm
B361 sq. cm
C121 sq. cm
D482 sq. cm
✓ Correct Answer: A — 240 sq. cm
(l+b+h)² = l²+b²+h² + 2(lb+bh+hl). 19² = 11² + TSA. 361 = 121 + TSA. TSA = 240 sq. cm.
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