Question

Three consecutive numbers form the sides of a triangle, whose perimeter is 42 cm.

The area of the triangle is sq cm

Answer 1

let the side be x, x+1, x+2

perimeter = x+x+1+x+2 = 42

3x = 39

x =13

so sides are 13, 14, 15

use Hero's formula to calculate area

Answer 2

please refer to the attachment for the full answer of this question.

thank u..