Question

8.
a) The ratio of the sides of a triangle is 3: 4:5 and its perimeter 12cm. Find the area of the
triangle​

Answer 1

perimeter of a triangle = sum of all sides

12=3x + 4x +5x

12=12x

12/12=x

1=x

thus, 3x=3×1=3 cm

4x=4×1=4 cm

5x=5×1=5 cm

Area= 1/2×b×h

=1/2×3×4

=6cm²

Answer 2

hope the solution helps u....