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
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 =
= 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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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