Given hypotenuse of a right angled triangle ABC is 17cm and its base is 15cm, what is the area of tr

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07 Dec 2018 Area

Given hypotenuse of a right angled triangle ABC is 17cm and its base is 15cm, what is the area of triangle ABC in cm^2?

OPtion

1) 60
2) 30
3) 120
4) 40
5) 25
6) 90
7) 50
8) 80
9) 10
10) None of these

Solution

B= 15, H=17 and L =?

L^2 + B^2 = H^2
=> L^2 = H^2 - B^2 = 17^2 - 15^2 = 64
=> L = 8

Area of triangle = 8*15/2 = 60cm^2

Correct Option: 1 Best Solution (2)