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Numerical Ability
Geometry
Let ABC be a right-angled triangle, where angle A = 90 and AD is perpendicular to BC, accordingly area of ABC = 40 cm ² & ACD = 10 cm ² in area and AC = 9 cm What is the length of BC?
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- 18 should be the answer
this question is based on similarity - 8 years agoHelpfull: Yes(3) No(2)
- 12.65
BC = hypotenuse of triangle ABC
Area ABC = AB * AC / 2
=> AB = 80 / 9 cm
BC = sqrt ( AB^2 + AC^2) = 12.65 cm - 11 years agoHelpfull: Yes(0) No(13)
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