Question

1. The length of three sides of a triangle are 20cm, 13cm and 14cm. Find the perimeter of the triangle ​

Answer 1

Answer:

47 cm

Step-by-step explanation:

perimeter of triangle = side+base+side

=20+13+14

=47cm

Answer 2

Answer

Given sides of triangle

a=13,b=14,c=15

Semi-perimeter s=

2/1

(a+b+c)=

2/1

(13+14+15)=21

Area, A = √s(s−a)(s−b)(s−c)

A= √21(21−13)(21−14)(21−15)

A=84 cm