Question

The area of a trapezium shaped field is 48cm² hight=15m a=20,b=?

Answer 1

Answer:

The area of a trapezium

= 1/2 x (sum of ll sides ) x height

so

48 = 1/2 x (20+b) x 15

6.4 = 20+b

b = -13.6

according to your question

value of b must be - 13.6