Question

two sides of a triangle are 4cm and 3.2cm . Find the area of triangle ,if its perimeter is 9.6 cm.​

Answer 1

Answer:

Given that ;

Two sides of a Triangle is 4cm & 3.2cm

Perimeter of the Triangle = 9.6cm

Formula :

Perimeter of the Triangle ( P ) = Sum of three sides

9.6cm = a + b + c

9.6 = 4 + 3.2 + c

9.6 - 7.2 = c

Hence ;

c = 2.4cm

Formula :

Area of the Triangle ( A ) = 1 /.2 × b × h

Let ;

The side ( b ) = 3.2 cm

Height ( h ) = 4cm

A = 1 / 2 × 3.2 × 4

A = 3.2 × 2

A = 6.4cm²

Hence ;

Area of the Triangle ( A ) = 6.4cm²