Find the area of the following triangle whose sides are 5m,7m and 8m�

1.	Find the area of the following triangle whose sides are 5m,7m and 8m
Answer» Step-by-step explanation: LET .. a=5m ; b=7cm; c=8m we have 2S =a+b+c since s= SEMIPERIMETER so. .s= (5+7+8)/2 .......20/2= 10 area of tri.= $\sqrt{s (s - a)(s - b)(s - c)}$ $\sqrt{10(10 - 5)(10 - 7)(10 - 8)}$ $\sqrt{10 \times 5 \times 3 \times 2}$ $\sqrt{5 \times 2 \times 5 \times 3 \times 2}$ by making SQUARE... we get. 5×2×√3 ....10×√3. = 10×1.71 ... 17.1. ans.... by Herons formula..