Question

find the area of the issoceles triangle whose :- perimeter is 11 cm. and base is 4 cm.​

Answer 1

Answer:

the required area of given triangle is 7 cm²

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Answer 2

Answer:

let equal sides be x

x +x+4=11

2x +4=11

2x=7

x=3.5

area =

semi perimeter =11 /2=5.5

area =

$\sqrt{} 5.5(5.5 - 4)(5.5 - 3.5)(5.5 - 3.5)$

$\sqrt{} 5.5(1.5)(2)(2)$

$2 \sqrt{} 8.25cm {}^{2}$

$5.75cm {}^{2}$

Step-by-step explanation:

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