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CBSE Class 9 Answered

the base of a triangular field is three times its altitude is the cost of sowing the field at rupees 58 per hectare is rupees 783 find its base and height   
Asked by yuvrajlkr8877 | 07 Aug, 2019, 09:31: PM
answered-by-expert Expert Answer
We know that 
area of triangular field = cost of sewing field/ Rate of sowing = 783/58 = 13.5 hectare
1 hectare = 10000 m2
13.5 hectare = 135000 m2
Area of triangular field = 13.5 hectare = 135000 m2
Let altitude of triangular field be h.
The base of a triangular field is three times its altitude.
Hence, base of triangular field = 2h
Area of field = 1/2 bh
1/2 3h2  = 135000
we get h = 300 
Hence, altitude = h = 300 m
base = 900 m
Answered by Sneha shidid | 08 Aug, 2019, 10:37: AM

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