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If the length of a cuboid is increased by 5cm, its surface area will increase by 80cm What is the volume of the original cuboid in cubic centimeter?
Bottom length = 80 △ 5 △ 4 = 4cm
Original volume = 4 × 4 × 40 = 640 CC
What is the surface area of a cuboid with a length of 40cm, a cross section of square, a length of 5cm and a surface area of 80cm2
The section is square, so width = height
Width × 5 × 2 + height × 5 × 2 = 80,
Width + width = 8,
Width = 4 (CM) = height,
The surface area of a cuboid
=Length × width × 2 + length × height × 2 + width × height × 2
=40×4×2+40×4×2+4×4×2
=320+320+32
=672(cm²)
If the height of a cuboid is increased by 5cm, the surface area will increase by 80 square meters,
It's about length and width
L=D=4cm
If the height is increased by 5cm, the surface area will be increased by 80cm, and the original length will be calculated
The surface area and volume of a square
Bottom length = 80 △ 4 △ 5 = 4cm
Surface area = 4 × 4 × 2 + 4 × 4 × 40 = 672 square centimeter
Volume = 4 × 4 × 40 = 640 CC
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