Find the area of a rectangle with a length of 8 cm and a width of 3 cm. Find a square with a side of 4 cm.

1) A rectangle is a rectangle whose opposite sides are equal and the corners are right.

Its area (numerical characteristic of a two-dimensional geometric figure) is calculated by the formula:

S = a * b.

Let’s find this value, provided that its measurements are 8 and 3 cm:

S = 3 * 8 = 24 cm².

2) All sides of a square are equal.

Its area is determined by the formula:

S = a².

Let’s calculate it for a square whose length is 4 cm:

S = 4² = 16 cm².