Question

The parallel side of trapezium are 20 cm and 10 cm its non parallel sides are both equal is being 13 centimetre find the area of trapezium

Answer 1

Answer:180 cm square

Step-by-step explanation:

Since the length of nonparallel sides are equal, its shape is like "/ \".

We divide the trapezium into 3 parts - 2 triangles and a rectangle.

base of triangle = (20-10)/2

                = 5

height of triangle as well as rectangle^2 = 13^2 - 5^2

height^2 = 144

height = 12

area of trapezium = (1/2)(sum of parallel sides)(height)

                 = (1/2)(10+20)(12)

                 = 180 cm square