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The circumference of a rectangle is 96cm, and the length is 6cm less than twice the width. How many cm are the length and width? Let the length be xcm, and the width be YCM. According to the meaning of the problem, the equations are () Such as the title~
2(x+y)=96
x+6=2y
The bottom of a cuboid is a square. Expand the side of the cuboid to form a square with a circumference of 80cm. Calculate the volume of the cuboid
The bottom of a cuboid is a square. Unfold the side of the cuboid to form a square with a perimeter of 80cm, 80g4 = 20cm, which means that the height of the cuboid is 20cm and the perimeter of the bottom is 20cm. Because the bottom is a square, the length and width are both 20cm
So its volume is 5 * 5 * 20 = 500 cubic centimeters
The bottom of a cuboid is a square. Unfold the side of the cuboid to form a square with a circumference of 80cm. What is the volume of the cuboid?
To solve the problem, the teacher's answer is 20 * 20 * 80 = 32000. I don't think it's right,
That is to say, its side length is equal to 4 times of its bottom length
Set an X!
2*4x+2*4x=80
x=5
They are: 5,5,20,
The answer is: Volume: 500
The teacher's answer is wrong!
So the fundamental perimeter is 180
How could it be 80?
Or are you wrong?
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