EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 4 - Circles>SAT 2020>Q 1

MEDIUM

NTSE Stage II

IMPORTANT

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Two tangents $P A$ and $P B$ are drawn to a circle with centre $O$ from an external point $P$ . The chord $A B$ intersects the line segment $P O$ at $Q$ . Then, the square of the radius of the circle is

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Important Questions on Circles

MEDIUM

NTSE Stage II

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR SAT>Chapter 4 - Circles>SAT 2019>Q 2

It is known that area of a cyclic quadrilateral is

\sqrt{(s - a) (s - b) (s - c) (s - d)}

where

a, b, c, d

are the sides and

s = \frac{a + b + c + d}{2}

. If a circle can also be inscribed in the cyclic quadrilateral then the area of this quadrilateral is