Question

Find the area of an isosceles triangle having base 3 cm and length of one of the equal sides is 5 cm.

Answer 1

Answer:

base=3cm

equal sides=5cm,5cm

semi perimeter, s = a+b+c/2=3+5+5/2 CM =13/2cm=6.5cm

Area of triangle=√s(s-a) (s-b) (s-c)

= √6.5(6.5-3)(6.5-5)(6.5-5)

=√6.5*3.5*1.5*1.5

=√5*1.3*5*0.7*1.5*1.5

=5*1.5√1.3*0.7

=7.5√0.91

=7.5*0.9539

=7.1545..

Step-by-step explanation:

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Answer 2

Answer:

1.5√22.75 = 7.15

Step-by-step explanation:

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