Answer :

viny
I will give you whole forula which are imp:- Here they are:-
1) Rectangle:- l*b
2)rhombus:- 1/2 * d1*d2 where (d is diagnoal)
3)||  bh   ( base * height )
4) trapesium = 1/2 * (sum of all parrel side)*h
4)sq.  a2
5)circel - pie r2

whizzy
formula is=D(1/2*h1+1/2*h2)

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