Question

3. Find the length of each of the equal sides of the isosceles triangle, if the
perimeter and unequal side are :
©) Perimeter = 30 cm, unequal side = 8 cm
(1) Perimeter = 55 cm, unequal side = 15 cm
Ramesh goes times around it. H.​

Answer 1

Answer:

P=a+b+c

30=a+a+c(a=b)

30=2a+8

30-8=2a

22=2a

a=11

Answer 2

Answer:

Let the isosceles triangle be a and b.

a=b(being isosceles triangle)

Perimeter of triangle=a+b+c

30=a+a+c

30=2a+8cm

30-8=2a

22=2a

a=11

Hence,the equal side of triangle is 11 cm.

Do, others by the same process.