Question

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plzzz solve question 11 nd 12

plzzz don't spam ✌️​

Answer 1

Answer:

Step-by-step explanation:

a=13m               b=14m                  c=15m

s=a+b+c/2=13+14+15/2=42/2=21m

area of wall= under root $s(s-a)(s-b)(s-c)$

=21*21-13*21-14*21-15

=21*8*7*6

=7*3*2*2*2*7*2*3

=7*3*4=84m sq

rent for a year=rs 2000

rent for a month=2000/12

rent for 6 months=2000/12*6

rent for 84 m sq=2000/12*6*84

=RS 84000