The least perimeter of an isosceles triangle in which a circle of radius can be…

MATHEMATICS · Single correct · A Level · Mathematics · Differentiation · Differentiation

Problem

The least perimeter of an isosceles triangle in which a circle of radius rr can be inscribed is (a) 43r4\sqrt{3}r (b) 23r2\sqrt{3}r (c) 63r6\sqrt{3}r (d) 83r8\sqrt{3}r

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