Question

Here is a boat’s sail in the shape of a right-angled triangle.
Work out the total distance around the outside of the sail. (Hint: Perimeter)

Answer 1

ans=36m

since it is a right angled triangle

base

$base {}^{2} + altitude {}^{2} = hypotenuse {}^{2}$

using this base^2=15^2-12^2

=81.

now base=√81=9

now perimeter=9+15+12

=36m

hope this helps