Question

find the volume , the total surface area and the lateral surface area of a rectangular solid 6m long, 4.5m broad and 0.8m high

Answer 1

Step-by-step explanation:

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Answer 2

➔ Given :-

• Length of cuboid = 6m
• Breadth of cuboid = 4.5m
• Height of cuboid = 0.8m

➔ To find :-

• Volume of cuboid
• Total surface area of cuboid
• Lateral surface area of cuboid

➙ Volume of cuboid = length × breadth × height

➙ Volume of cuboid = 6 × 4.5 × 0.8

➙ Volume of cuboid = 21.6m³

∴ Volume of the cuboid is 21.6m³

➝ Total surface area of cuboid = 2( lb + bh + hl )

➝ Total surface area of cuboid = 2 (6×4.5 + 4.5×0.8 + 6×0.8)

➝ Total surface area of cuboid = 70.8m²

∴ Total surface area of cuboid is 70.8m²

➞ Lateral surface area of cuboid = 2( l + b × h)

➞ Lateral surface area of cuboid = 2(6 + 4.5 × 0.8)

➞ Lateral surface area of cuboid = 16.8m²

∴ Lateral surface area of cuboid is 16.8m²

⟹ Rectangular solid is called as CUBOID.