Question

ШИРИНА ПРЯМОУГОЛЬНИКА 18 СМ, а длина 3 дм.От одного из его углов отрезали квадрат со стороной 8 см. Найди периметр и площадь получившейся фигуры

Answer 1

Периметр- (18+30)2=96см
площадь- 18×30-8×8=476см

Answer 2

Given Information:

We are given that the width of a rectangle is 18 cm and the length is 3 dm. From one of its corners, a square with a side length of 8 cm is cut off.

Calculating the Perimeter and Area:

To find the perimeter and area of the resulting figure, we need to calculate the dimensions of the remaining rectangle after the square is cut off.

1 decimeter (dm) is equal to 10 centimeters (cm). Therefore, the length of the rectangle is 3 dm * 10 cm/dm = 30 cm.

The remaining rectangle has a width of 18 cm and a length of 30 cm.

Perimeter: The perimeter of a rectangle is calculated by adding the lengths of all its sides. In this case, the rectangle has two sides with a length of 18 cm and two sides with a length of 30 cm.

Therefore, the perimeter of the rectangle is 18 cm + 18 cm + 30 cm + 30 cm = 96 cm.

Area: The area of a rectangle is calculated by multiplying its length by its width. In this case, the rectangle has a width of 18 cm and a length of 30 cm.

Therefore, the area of the rectangle is 18 cm * 30 cm = 540 cm².

Answer:

The perimeter of the resulting figure is 96 cm and the area is 540 cm².