18. A triangular hoarding of dimensions 11 m, 6 m and 15 m is used for commerical activities The boarding yields an earning of 5000 per m ma per year. A company hired it for 6 months. How much did it pay? (Take V2 = 1.41)
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triangular hoarding of dimensions 11 m, 6 m and 15 m is used for commerical activities The boarding
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Step-by-step explanation:
S = a+b+c/2 = 11+6+15/2
= 32/2=16 cm
Area =√16(16-11)(16-6)(16-15)
=√16*5*10*1
=√4×4×5×2×5
=4×5√2
=20√2 cm²
In one month = Rs. 5000. (√2=1.41)
=20×1.41×5000
=20×141/100×5000
=141000 cm²
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