Math, asked by sibasish54, 6 months ago

A metal sheet 8.75cm long and 3.2 cm wide , weighs 105 gm . If it is cut and made into a rectangular price 8 cm long and 3 cm wide , what will the rectangular piece weigh ??​

Answers

Answered by lavanyaroy17239
7

Answer:

we know that ,

total surface area of cuboid =( 2×lb ×bh ×hl)

surface area of given cuboid

= 2 (27 × 8 ×1 + 27 × 1) = 502cm^

volume of cube = 27 × 8 × 1 = 216cm^

°.° edge of the cube a =

 \sqrt[3]{216}

= 6cm

we know that

total surface area of a cube = 6a^

surface are of this cube = 6 × (6)^ =216cm^

hence the difference of surface ares =

502 - 216 =286cm^

ANSWER = 286CM^

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Answered by deeya19
6

Answer:

286 cm²

Step-by-step explanation:

total surface area of cuboid =( 2×lb ×bh ×hl)

surface area

= 2 (27 × 8 ×1 + 27 × 1) = 502cm^

volume of cube = 27 × 8 × 1 = 216cm^

°.° edge of the cube a =

3

216

= 6cm

next,

tsa of a cube = 6a²

surface are of this cube = 6 × (6²)

therefore the difference of surface areas =

502 - 216 =286cm²

ANSWER = 286cm²

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