Question

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.
please solve this problem... who will answer I will mark as brainlist and thanks him​

Answer 1

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

Answer 2

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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