Question

Solve question no.9 in the copy.Don't do it directly.if you do it directly then your answer will be reported.

Answer 1

This is the answer.. Hope it helps

Answer 2

Now, let's consider the lenght of side A as 8cm and length of side B as 11cm.
because A+B+C ,i.e, perimeter = 32cm.
therefore,
A +B + C = 32cm
8cm + 11cm + C = 32cm
therefore,
C = 32cm - 19cm = 13 cm.
Now,
S = (A + B + C) ÷ 2
= 32 ÷ 2 = 16cm.
Now according to Heron's formula,
Area = √[S ( S - A) ( S - B )( S - C )]
= √[16 X ( 16 - 8) X ( 16 - 11 ) X ( 16 - 13)]
=√[ 16 X 8 X 5 X (3)
=√ 1920
= 43.817 cm².
Hope this helps.