Question

find the answer for 2nd one please​

Answer 1

Answer:

ar. of rectangle= l×b

=20×5

=

$100cm {}^{2}$

now, ar. of trapezium= 1/2×sum of its parallel sides×h

=1/2×(30+20)×7

=1/2×50×7

=1/2×350

$175cm {}^{2}$

So, Ar. of Polygon= Ar. of rectangle+ Ar. of trapezium

= 100+175

$275cm {}^{2}$