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 = 2

2 thoughts on “<br />Find the product of 7ab2c5, 4a3b2c, 2abc3, ab, 3 and 2.a²b.<br />Find the surface are of a cuboid if I = 22cm, 2cm and h = 2”

1. 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

   Step-by-step explanation:

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2. 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

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