Draw a square with a side of 10 cm.Cut off a triangle at the corners with a side of 2 cm.

Draw a square with a side of 10 cm.Cut off a triangle at the corners with a side of 2 cm. find the area of the remaining figure.

Let’s find the area of the square:

S square = 10 * 10 = 100 cm².

Let’s cut off from each corner of the square right-angled triangles with legs equal to 2 cm.Let’s find the area of one cut off triangle:

S tr = 2 * 2 * 1/2 = 2 cm².

Subtract the area of the square of the four cut triangles from the area of the square:

S = 100 cm² – 2 cm² – 2 cm² – 2 cm² – 2 cm² = 100 cm² – 8 cm² = 92 cm² – the area of the resulting figure.

Answer: 92 cm².