Mensuration Practice Test 2

Question : 22 of 40

Marks: +1, -0

Find the surface area of a tile with dimensions 0.09 m × 7 cm × 5.8 cm.

Solution:

Surface area of the tile = 2(lb + bh + hl)
= 2[(9 × 7) + (7 × 5.8) + (5.8 × 9)]
= 2[63 + 40.6 + 52.2]
= 2[155.8] = 311.6

cm^2

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