5. Using Heron's formula, find the area of an isosceles triangle whose perimeter is16cm and base is 6cm.
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sides of triangle are a, b and c.
Step-by-step explanation:
if the perimeter of isoceless triangle is 16 cm and base of the triangle is 6 cm, then equal sides are (16-6) / 2 = 5 cm .
Hence sides are 5 cm, 5 cm and 6 cm.
Area =
where s is semi-perimeter, s = (a+b+c)/2 . sides of triangle are a, b and c.
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