SOLUTION: find the area of a triangle 5cm, 7cm, 10cm round to the nearest tenth

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Question 899759: find the area of a triangle 5cm, 7cm, 10cm round to the nearest tenth
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
Use Heron's formula to calculate the area
HERON”S FORMULA

Area of Triangle = sqrt%28s%2A%28s-a%29%28s-b%29%28s-c%29%29
where s = half the perimeter a,b,c are the sides of the triangle
a= 5 b= 7 c= 10

S= %28a%2Bb%2Bc%29%2F2 S= 11

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
Area =sqrt%28%0911%09%2A%09%28%096%09%29%28%094%09%29%28%091%09%29%29

Area =sqrt%28%09264%09%29%29
Area = 16.25 square cm