Question

nts. The sides of
2.
The triangular side walls of a flyover have been used for advertisements. The
the walls are 122 m, 22 m and 120 m (see Fig. 12.9). The advertisements in
earning of 5000 per m per year. A company hired one of its walls for 3 mo
much rent did it pay?
ertisements yield an
Ils for 3 months. How
1000)
122m PPS
22m
120m
Fig. 12.9​

Answer 1

Answer:

isn't it a ncert question. but here is the explanation

Step-by-step explanation:

SEMI PERIMETER- A+B+C/2

122+120+22/2

=132

then √s(s-a)(s-b)(s-c)=area

√132(132-122)(132-120)(132-22)

√132*10*12*110

now just factorise the numbers under root

√11*12*10*12*11"10

now,

11*12*10

1320m^2=area

cost is RS. 5000/m^2 for a year

so 5000*1320*3/12

that will bring us to the cost

RS.1,650,000

thank you sir for this question