find area of isosceles triangle whose perimeter is 11 cm and base is 4 cm
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Answered by
45
let equal sides be x
→ x + x + 4 = 11
2x+4=11
2x= 7
x=3.5
Semi perimeter = 11/2 = 5.5
Area = √5.5(5.5 - 4)(5.5 - 3.5)(5.5 - 3.5)
= √5.5(1.5)(2)(2)
= 2√8.25 cm²
≈ 5.75 cm²
Answered by
2
Answer:
The answer is 5.74 m²
I hope it is correct
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