Question

The area of triangle with given two sides and respectively and perimeter equal to is: ​

Answer 1

Answer:

Step-by-step explanation:

Area= 21 sqrt 11cm square

Step-by-step explanation:

Given:

(i) Perimeter of traingle is 42 cm.

(ii) Measure of two sides of traingle are 18 and 10 cm respectively.

To Find:

(i) What is the area of triangle?

Solution: Let the third side of triangle be x cm. Therefore,

=Sum of all sides= Perimeter

= 18+10+x= 42

= x= 42-28

x= 14 cm { Third side of triangle}