Question

a) A cuboid is 8m long, 12m broad and 3.5m high. Find its i) Total surface area ii) lateral surface area​

Answer 1

Step-by-step explanation:

Length of a cuboid = 8 m

Breadth of a cuboid = 12 m

Height of a cuboid = 3.5 m

(i) Total surface area = 2(lb + bh + hl)

= 2(8 x 12 + 12 x 3.5 + 3.5 x 8)

= 2(96 + 42 + 28)

= 2 x 166 = 332 m2

(ii) Lateral surface area = 2h(l + b)

= 2 x 3.5(8 + 12)

= 7 x 20

= 140 m2

Answer 2

Answer:

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