Question

find the area of the triangle whose sides are 6cm 11.1 cm and 15.3

Answer 1

Answer:

s=(6+11.1+15.3)/2=32.4/2=16.2

Now you must be knowing the formula,

∆=√{(s(s-a)(s-b)(s-c)}

∆=√{16.2(16.2-6)(16.2-11.1)(16.2-15.3)}

∆=√{16.2×10.2×5.1×0.9}

∆=√{758.4516}

∆= 27.54 sq cm