Question

find the sum of the length of bases of a trapzium whose altitude is 4 cm and area is 28cm square​

Answer 1

Step-by-step explanation:

Area of trapezium =

2

a+b

×h

Where, a and b are parallel sides and h is perpendicular height.

So, (a+b) is sum of length of bases of a trapezium.

Now,

Area of trapezium =

2

a+b

×h

⇒ 4.2=

2

a+b

×280

⇒

280

8.4

=a+b

⇒ a+b=0.03cm=(0.03×100)m=3m

∴ The sum of length of the bases of a trapezium is 3m

Answer 2

Answer:

,

Step-by-step explanation:

answer is 14 cm .............