PDF chapter test TRY NOW
1. The area of the isosceles triangle is \(\frac{5}{4} \sqrt{11} cm^2\), if the perimeter is \(11 cm\) and the base is \(5 cm\).
2. The area of the equilateral triangle is \(20\sqrt{3} cm^2\) whose each side is \(8 cm\).
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