Question

Find the perimeter of an isosceles triangle whose one of two equal sides is 6cm andthe third side is 7.5cm. also find its semi perimeter

Answer 1

Step-by-step explanation:

three sides of isosceles triangle = 6cm,6cm,7.5cm

perimeter = 6+6+7.5 cm

= 19.5 cm

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Answer 2

Step-by-step explanation:

perimeter of isosceles triangle=sum of all three sides.

Hence

first side=6cm

second side=6cm(In isosceles triangle of two sides are equal)

three sides=7.5cm (given)

Now,

P=[6+6+7.5]cm

P=19.5cm