Question

please solve this problem

Answer 1

a) perimeter =sum of 3 sides
=3+4+5
= 12cm

b) perimeter=9×3=27cm.

c) perimeter=8+8+6=22cm

Answer 2

3


a) perimeter of triangle =sum of all sides
according to question
perimeter
$= 3 + 4 + 5$
$12cm$
b) in equilateral triangle all sides are equal
perimeter
$= 9 + 9 + 9 = 3 \times 9 = 27cm$
c) in isoceles triangle two sides are equal
perimeter
$= 8 + 8 + 6 = 22cm$