The difference between the semi-perimeter and the sides of a \[\Delta ABC\] are 8 cm, 7 cm and 5 cm respectively. The area of the triangle is____.

The difference between the semi-perimeter and the sides of a \[\Delta

1.	The difference between the semi-perimeter and the sides of a \[\Delta ABC\] are 8 cm, 7 cm and 5 cm respectively. The area of the triangle is____.
A.	\[20\sqrt{7}\,c{{m}^{2}}\]
B.	\[10\sqrt{14}\,c{{m}^{2}}\]
C.	\[20\sqrt{14}\,c{{m}^{2}}\]
D.	\[140\,c{{m}^{2}}\]
Answer» D. \[140\,c{{m}^{2}}\]

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The difference between the semi-perimeter and the sides of a \[\Delta ABC\] are 8 cm, 7 cm and 5 cm respectively. The area of the triangle is____.

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