Question

Q.1] Find the area of triangle whose two sides are 12cm and 9 cm and the perimeter is 32cm.
Ans:​

Answer 1

Step-by-step explanation:

perimeter of triangle =sum of all sides

32 = 12+9+x

32 = 21 + x

32-21 = x

11 = x

third side of triangle is 11cm

Area of triangle = 1/2 * base * height

= 47.33cm²