Question

Find the perimeter and area of a triangle with a base of 9 cm and sides of 13 cm and 19 cm

Answer 1

Perimeter: 41cm

Area: 12.5cm (squared)

Explanation:

Perimeter: add up all the sides and base.

Scalene triangle area: add the two sides together and divide by two, then add the answer you get to the base and divide that by 2.

E.g: 19+13=32

32/2 = 16

16+9=25

25/2= 12.5cm(squared)