How to find area
Question
AB is a diameter of a circle with centre OF and DO|| CB. If angle BCD= 120°, calculate angle BAD, angle ABD, angle CBD and angle ADC. Also show that ∆ AOD is an equilateral triangle.
Maths
Nov. 22, 2017, 9:50 p.m.
Answer
AB is a diameter of a circle with centre Of and DO parallel to CB. If angle BCD = 120°, calculate angle BAD, ABD, CBD, ADC. Also show that ∆ AOD is an equilateral triangle.
Class 9
Nov. 22, 2017, 9:31 p.m.
Answer
If circles are drawn taking two sides of a triangle as diameters, prove that the point of intersection of these circles lie on the third side.
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Two bags A and B contain 4 white and 2 black balls and 2 white and 2 black balls respt. From bag A two bolls transferred to bag B. Find probability of drawing 1) 2 white balls from bag B.
Class 9
Nov. 22, 2017, 6:33 p.m.
Answer
A traffic signal board indicating school ahead is an equilateral triangle with side a. Find the area of the signal board using herons formula if its perimeter is 130 cm . What will be the area of signal board?
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Class 11
Nov. 22, 2017, 11:50 a.m.
Answer