Question

The mean length of the base of a trapezium is 105 cm.find the area of the trapezium if its altitude is 80 cm

Answer 1

since mean length is 105
hence, total lengh is =105x 2 =210

hence area = 1/2 x 210x 80= 8400 cm squre

Answer 2

Answer:

the average lenght of bases of trapezium.ie(a+b/2)=105cm

altitude(h)=99cm

now,area of trapezium=(a+b/2)*h

=105*99

=10395

thus the area of trapezium is 10395cm sq

Step-by-step explanation: