Question

Plz solve these first 2 questions ( 1 & 2)
Also give the solution...

Answer 1

1/2 * (12+20) * 10
1/2*32*10
16*10
160dm2

Answer 2

Answer:

Step-by-step explanation:

We know half multiplied by sum of parallel sides of a trapezium multiplied by its altitude gives us the area of the trapezium. So

For question 1-

{Area of trapezium}=1/2×(12+20)×10

=1/2×32×10dm^2

=1×32×5 dm^2

=32×5dm^2

=160dm^2

Similarly the answer of question 2 by following the same method mentioned above,we get

=(1/2)(28+3)(25)dm^2

=1/2×31×25dm^2

=775/2dm^2

=387.5 dm^2