Question

please answer this question with step by step explanation​

Answer 1

Answer:

ex:-9.1

2.i)

area of ∆abc =1/2 × b × h

= 1/2 × 4 × 2

=4/2 × 2

4cm^2

area of aedc= s^2

=4^2=16cm

area of abcde = 16+4cm^2.

=20cm^2

ii) area of trapezium = h/2(a+b)

=8/2(7+18)

=4×25=100cm^2

area of square =l×b

=18×18

=324cm^2

=324+100=424cm^2

iii)area of trapezium=h/2(a+b)

=8/2(6+15)

=4×21=84cm^2

area of rectangle=lb

=20×15

=300+84=384cm^2