It is known that the perimeter of the rectangle is 8 cm, and the diagonal length is 6 cm?

It is known that the perimeter of the rectangle is 8 cm, and the diagonal length is 6 cm?

In practice, the area of rectangle can't be an imaginary number, so this problem is wrong

If the area of a rectangle is 16 times that of the root 3 square centimeters, and the sum of the two diagonal lines is 16 cm, then its circumference is 16 cm______

Let a group of edges be a, B
AB = 16 √ 3, √ (A & # 178; + B & # 178;) = 16 △ 2
That is, a & # 178; + B & # 178; = 64
∴﹙a+b)²=64+32√3=16(√3+1)²
∴a+b=4(√3+1)
Its circumference is 8 (√ 3 + 1) cm

If the angle between the two diagonals of the rectangle is 120 and the longer side is 3cm, what is the diagonal of the shorter side?
Don't ask for the diagonal

The angle between the two diagonals of a rectangle is 120, and the angle between the diagonals and the bottom is 30 degrees. Let the short side be x, then the diagonal is 2x, and the long side be the root sign 3x. We can get x = 4, so the short side is 4, and the diagonal is 8

If the angle between the diagonals of the rectangle is 120 ° and the root of the long side of the rectangle is 3cm, the sum of the shorter side and a diagonal is?

3cm