Find the area of a triangle whose two sides are of lengths 36 cm and 20 cm and perimeter is 84 cm
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Answer:
area=84✓11
Step-by-step explanation:
perimeter of ∆=36+20+X
84=56+X
X=28
s=84/2
s=42
a=✓s(s-a)(s-b)(s-c)
a=✓42(42-36)(42-20)(42-28)
a=✓42(6)(22)(14)
a=✓7×6×6×2×11×7×2
a=6×7×2✓11
a=84✓11
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