MCQ Class 9 Maths Ganita Manjar Chapter 6 Measuring Space: Perimeter and Area Advertisement 1. Heron’s formula is: √s(s-a)(s-b)(s-c) s(s-a) ½bh abQuestion 1 of 202. Area of a circle is: 2πr πr² πd r²Question 2 of 203. Area of semicircle is: πr² πr²/2 πr r²Question 3 of 204. Area of quarter circle is: πr²/4 πr²/2 πr r²Question 4 of 205. Sector is bounded by: Two chords Arc and two radii Two diameters One radiusQuestion 5 of 206. Area of sector formula is: πr²θ/360 2πrθ/360 πrθ r²θQuestion 6 of 207. Segment is bounded by: Arc and chord Two radii Two chords DiameterQuestion 7 of 208. A square is a special case of: Triangle Rectangle Circle ParallelogramQuestion 8 of 209. A circle has how many diameters? 1 2 Infinite 0Question 9 of 2010. The value of π discovered by Āryabhaṭa was: 3.1416 3.14 22/7 10Question 10 of 2011. Mādhava gave π as: Fraction Infinite series Decimal Whole numberQuestion 11 of 2012. Who popularised the symbol π? Euler Heron Archimedes LambertQuestion 12 of 2013. Who proved π is irrational? Euler Lambert Heron BrahmaguptaQuestion 13 of 2014. Circumference of circle in terms of diameter is: πd 2πd d² πd²Question 14 of 2015. Area of equilateral triangle is: √3a²/4 a² 2a² a²/2Question 15 of 2016. A 3,4,5 triangle is: Obtuse Acute Right-angled IsoscelesQuestion 16 of 2017. Circumcircle passes through: One vertex Two vertices Three vertices No vertexQuestion 17 of 2018. Incircle touches: Vertices Sides Diagonals AnglesQuestion 18 of 2019. Area using circumradius R is: abc/4R abcR ab/R a+b+cQuestion 19 of 2020. Area using inradius r is: r(a+b+c)/2 r(a+b+c) r² arQuestion 20 of 20 Loading...
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