Find the product of 7ab2c5, 4a3b2c, 2abc3, ab, 3 and 2.a²b.
Find the surface are of a cuboid if I = 22cm, 2cm and h = 20cm.
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Question:
Find the volume , lateral surface area, total surface area of cuboid whose dimensions are l= 22cm,b=12cm and h=7.5
Solution :
Given that
Length = 22 cm
Breadth = 12 cm
Height = 7.5 cm
Solution
Volume of a cuboid = l × b × h
= 22 × 12 × 7.5
= 1,980 cm^3
L.S.A of a cuboid = 2(l + b) × h
= 2(22 + 12) × 7.5
= 2 × 34 × 7.5
= 510 cm^2
T.S.A = 2(lb + bh + hl)
= 2(22 × 12 + 12 × 7.5 × 7.5 × 22)
= 2(264 + 90 + 165)
= 2 × 519
= 1,038 cm^2
Answered by
0
Answer:
Given that l=20cm, b=12cm, h=9cm
∴T.S.A=2(lb+bh+lh)
=2[(20×12)+(12×9)+(20×9)]
=2(240+108+180)
=2×528
∴T.S.A=1056cm
2
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