document.write( "Question 1107362: The sides of a triangle are 7cm, 8cm and 5cm respectively. Find its area \n" ); document.write( "

Algebra.Com's Answer #722399 by rothauserc(4718) $\"\"$ $\"About$

You can put this solution on YOUR website!
Use Heron's formula
\n" ); document.write( ":
\n" ); document.write( "Area (A) = square root(s(s-a)(s-b)(s-c)) where s = (a + b + c)/2 and a, b, c are the lengths of the sides of the triangle
\n" ); document.write( ":
\n" ); document.write( "s = (7 + 8 + 5)/2 = 10
\n" ); document.write( ":
\n" ); document.write( "A = square root(10(10-7)(10-8)(10-5)) = square root(300) = 10square root(3) cm^2
\n" ); document.write( ":
\n" ); document.write( "Note 10square root(3) is approximately 17.32 cm^2, where cm^2 is square centimeters
\n" ); document.write( ":
\n" ); document.write( " \n" ); document.write( "

\n" );