Determine it's perimeter and base.

The figure is a trapezoid. It has two right angles. The lengths of its bases are 7 and 15. Its height is 6.

Solution:

Perimeter = 7+15+6+sqrt(6^2+8^2) = 38

The figure is a rhombus. Its side length is 13. The length of one of its diagonals is 24.

Solution:

Other diagonal=  sqrt(13^2-12^2)*2 = 10

So the other diagonal is 10