Base = 5 - 2 = 3, Height = 3 - 1 = 2. Area = base * height = 3 * 2 = 6.

The area of a circle is given by the formula A = πr^2. Thus, A = π * 3^2 = 9π.

The area of a parallelogram is calculated as base times height. Thus, area = 10 * 5 = 50.

This is a rectangle with length 4 and width 3. Area = length * width = 4 * 3 = 12.

The length is 4 - 1 = 3 and the width is 5 - 2 = 3. Area = length * width = 3 * 3 = 9.

The area of a regular hexagon can be calculated using the formula A = (3√3/2) * side^2. Thus, A = (3√3/2) * 4^2 = 48.

Area = (d1 * d2) / 2 = (10 * 6) / 2 = 30.

Area = 1/2 * (base1 + base2) * height = 1/2 * (5 + 7) * 4 = 24.

The length of the diagonal can be found using the Pythagorean theorem: d = √(width^2 + height^2) = √(6^2 + 8^2) = √(36 + 64) = √100 = 10.

The area of a square is given by side^2. Thus, if area = 64, then side = √64 = 8.

Length of side = 5 - 1 = 4.

The lengths of the sides are 4, 3, and 5. Perimeter = 4 + 3 + 5 = 12.