Find the area of a right-angled triangle ABC, if AB = 6 m, AD = 4m15cm.

A rectangle is a geometric shape, the opposite sides of which are equal. The area of a rectangle is the sum of the lengths of all sides of the figure, which can be calculated as twice the sum of the lengths of the adjacent sides.
Thus, the perimeter of a rectangle with sides AB = 6 m, AD = 4 m 15 cm can be found as:
2 * (6 m + 4 m 15 cm) = 2 * (10 m 15 cm) = 20 m 30 cm.
Thus, the perimeter of a rectangle with sides of 6 m and 4 m 15 cm is 20 m 30 cm.
Answer: the perimeter of AВСD is 20 m 30 cm.