Q. 141

# The lengths of tw

Formula Used/Theory:-

Perimeter = sum of all sides of triangle

There can be 2 cases

(i) If equal sides in isosceles triangle is equal to 9cm

Then;

Perimeter = 9cm + 9cm + 20cm

= 38cm

(ii) If equal sides in isosceles triangle is equal to 20cm

Then;

Perimeter = 20cm + 20cm + 9cm

= 49cm

perimeter of triangle can be either 38cm or 49cm

Result:- Perimeter of triangle is either 38cm or 49cm.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
RELATED QUESTIONS :

If two angles of NCERT - Exemplar Mathematics

In an isosceles tNCERT - Exemplar Mathematics

In ∆PQR, if PQ = NCERT - Exemplar Mathematics

In ∆PQR of Fig. 6NCERT - Exemplar Mathematics

The lengths of twNCERT - Exemplar Mathematics

If D is the mid-pNCERT - Exemplar Mathematics

<span lang="EN-USNCERT Mathematics

Each of the two eNCERT - Exemplar Mathematics

In Fig. 6.9, BC =NCERT - Exemplar Mathematics

<span lang="EN-USNCERT Mathematics