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Area of a triangle = 1/2 base * altitude = 1/2 30 cm * 30 cm = 450 cm²

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The Brainliest Answer!
Given that,
base of an isosceles right triangle = 30 cm
Area of isosceles right triangle =  \frac{1}{2}a^2  [where 'a' is equal side]



= 450 sq cm
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