The parallel sides of a trapezium are 30 cm and 20 cm and its non-parallel sides are both equal. If the area of the trapezium is 300 cm2, then what is the length (in cm) of each non-parallel side?
1
10
2
15
3
12
4
13
The parallel sides of a trapezium are 30 cm and 20 cm and its non-parallel sides are both equal. If the area of the trapezium is 300 cm2, then what is the length (in cm) of each non-parallel side?