The area of a rectangle is calculated as Area = length * width. Here, Area = 10 * 4 = 40.

The area of a rectangle is calculated as Area = length * width. Here, Area = 10 * 5 = 50.

The area of a trapezoid is given by the formula: A = 0.5 * (base1 + base2) * height. Here, A = 0.5 * (6 + 10) * 5 = 0.5 * 16 * 5 = 40.

The area of a trapezoid is given by A = 0.5 * (base1 + base2) * height. Here, A = 0.5 * (8 + 5) * 4 = 0.5 * 13 * 4 = 26.

The length of the diagonal (d) of a rectangle can be calculated using the Pythagorean theorem: d = √(length² + width²). Here, d = √(8² + 6²) = √(64 + 36) = √100 = 10.

The perimeter of a triangle is the sum of the lengths of its sides. Here, Perimeter = 7 + 8 + 9 = 24.