document.write( "Question 899759: find the area of a triangle 5cm, 7cm, 10cm round to the nearest tenth \n" ); document.write( "
Algebra.Com's Answer #545579 by mananth(16946)\"\" \"About 
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Use Heron's formula to calculate the area
\n" ); document.write( "HERON”S FORMULA
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\n" ); document.write( "Area of Triangle = \"sqrt%28s%2A%28s-a%29%28s-b%29%28s-c%29%29\"
\n" ); document.write( "where s = half the perimeter a,b,c are the sides of the triangle
\n" ); document.write( "a= 5 b= 7 c= 10
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\n" ); document.write( "S= \"%28a%2Bb%2Bc%29%2F2\" S= 11
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\n" ); document.write( "Area =\"sqrt%28%0911%09%2A%09%28%0911%09-%095%09%29%28%0911%09-%097%09%29%28%0911%09-%0910%09%29%29\"
\n" ); document.write( "Area =\"sqrt%28%0911%09%2A%09%28%096%09%29%28%094%09%29%28%091%09%29%29\"
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\n" ); document.write( "Area =\"sqrt%28%09264%09%29%29\"
\n" ); document.write( "Area = 16.25 square cm
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