Find the area of the triangle to the nearest tenth.
Image wont upload but sides are 4 cm (left side), 7 cm (right side), 9 cm (bottom) of triangle.
+36916 Heron's formula states that the area of a triangle whose sides have lengths a, b, and c is
A = sqrt ( s ( s − a ) ( s − b ) ( s − c ) )
where s is the semi-perimeter of the triangle; that is,
s = (a + b + c) /2
sooooo s = ( 4 + 7 + 9)/2 = 10
then Area = sqrt [ 10 ( 10-4) (10-7) (10-9) ] I believe you can finish tis now 
