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A cuboid is 26 cm high. It is cut into two cuboids horizontally. The surface area is increased by 80 square cm
80 △ 2 × 26, = 40 × 26, = 1040 (cubic centimeter); answer: the original cuboid volume is 1040 cubic centimeter
The height of a cuboid is 30cm. After it is cut into two cuboids horizontally, the surface area is increased by 80 square centimeters to calculate the volume of the original cuboid
Bottom area = 80 △ 2 = 40 square centimeter, cuboid volume = 40 × 30 = 1200 cubic centimeter
A cuboid is 26 cm high. It is cut into two cuboids horizontally. The surface area is increased by 80 square cm
80 △ 2 × 26, = 40 × 26, = 1040 (cubic centimeter); answer: the original cuboid volume is 1040 cubic centimeter
A cuboid has a surface area of 340 square centimeters, a bottom area of 80 square centimeters, and a bottom perimeter of 36 centimeters. What is its volume in cubic centimeters?
The height is (340-80 × 2) △ 36 = 180 △ 36 = 5 (CM), and the volume is 80 × 5 = 400 (cm3). A: its volume is 400 cm3
Cut a cuboid 2 cm along its length to get a cube whose surface area is 80 square cm less than the original cuboid. Find out the cuboid's volume
The width of the reduced surface (the edge length of the remaining cube) is 80 △ 4 △ 2 = 10 (CM). The height of the original cuboid is 10 + 2 = 12 (CM). The volume of the original cuboid is 10 × 10 × 12 = 1200 (cm3). A: the volume of the original cuboid is 1200 cm3
A cuboid is lengthened and truncated by two centimeters to get a cube with a surface area of 80 square centimeters less than that of the original cuboid?
The reduced part of surface area is four equal small rectangles, one side of which is 2 cm long;
Then the length of the other side of the small rectangle = (80 ﹣ 4) ﹣ 2 = 10;
That is, the side length of the square is 10 cm;
Then the volume of the original rectangle = 10 * 10 * 12 = 1200 cubic centimeters
A cuboid, 4 cm long cut into a cube, surface area reduced by 80 square centimeters, the volume of the original cuboid
80 △ 4 = 20 cm
20 △ 4 = 5cm
5 * 5 * (5 + 4) = 225 cm3
This is the first answer. I wish you progress!
If the height of a cuboid is increased by 4cm, it will become a cube. At this time, the surface area will be increased by 80cm. What is the volume of the original cuboid
Write the process, not the equation
So the bottom is a square
So the side length is 80 / 4 / 4 = 5cm
So the original height was one centimeter
So the original volume is 5 × 5 × 1 = 25 cubic centimeters
One is 80cm in length and 60cm in width. Cut it into the largest one and the second one. How many cm in circumference are they?
The side length of the cut square is 60 cm, its perimeter is: 60 × 4 = 240 (CM); the perimeter of the remaining rectangle is: (80-60 + 60) × 2, = 80 × 2, = 160 (CM); answer: the perimeter of the largest cut square is 240 cm, the perimeter of the remaining rectangle is 160 cm
A rectangle is 80 cm long. After cutting off the largest square, a small rectangle is left. Find the circumference of the small rectangle
160cm
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