The lengths of the parallel sides of a trapezium are 9 cm and 12 cm. lf the area of the trapezium is 105 cm2, find the perpendicular distance between the parallel sides.
-
A.
5cm -
B.
7cm -
C.
10cm -
D.
15cm
Correct Answer: Option C
Explanation
(frac{1}{2}(a+b)times h = 105cm^2\
frac{1}{2}(9+12)times h = 105\
h = frac{105 times 2}{21} = 10cm)