1.

9. The sides of a triangle are 11 cm, 15 cm and 16 cm. The altitude to largest side is ?​

Answer»

Step-by-step EXPLANATION:

area=ROOT of s(s-a)(s-b)(s-c)

s=11+15+16/2

    =21cm

area=root of 21*(21-11)(21-15)(21-16)

=root of 21*10*6*5

=root of 7*3*5*2*3*2*5

=5*3*2root7

=30root7

area=1/2*b*h

b=16cm

30root7=1/2*16*h

h=30root7/8

 =15root7/4


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