Question

find the area of a rectangle whose sides are 9 CM, 12 cm and 15 CM​

Answer 1

Answer:

it's cannot of three sides we can only take two of them understood length and breadth

question is wrong

Answer 2

Answer: i think ur question is wrong...it should be triangle in place of rectangle....if it is trangle then it's area will be :-

S(semi perimeter) = 9+12+15/2

=18

Therefore, Area of the triangle according to Heron's formula = √18(18-9)(18-12)(18-15). [ Even though i gave root over sign only in 18 but the whole equation is in root ok not only 18]

=√18*9*3*6

=54 cm^2

Hope this might help