the base of the triangular field is three times its altitude.If the cost of levelling the field at ₹ 30.50 per sq.meter is ₹7350,find its base and height.
bhumika84:
no
in my ans sheet the ans is 38.02 and 12.67m
yes
class7
but when i divided 7350and 30.50 the ans is too long
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Area = 7350/30.50
⇒ 1/2 × 3a ×a = 735000/3050
⇒ a² = [735000×2]/[3050×3]
⇒ a² = 160 [ approx.]
∴ a = 4√10 = 4 × 3.17 = 12.68
Height = a m = 12.68 [ approx]
base = 3a m = 3× 12.68 m = 38.04 m
ok
no
no no now i got it thanks for helping me
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