Question
In which medium is the speed of sound the
highest?Solution
Sound travels fastest in solids due to tightly packed molecules. Among the options, sound travels fastest in aluminium at approximately 6420 m/s.
If the perimeter of a square is 40 cm, what is the length of each side?
In the given figure, O is centre of the circle. Circle has 3 tangents. If ∠ QPR = 45 0 , then what is the value (in degrees) of ∠ QOR ?
Orthocenter of an right angle triangle lies on
The measure of an angle is one-third of its supplementary angle. Find its measure.
In the given figure. ‘O' is the centre of the circle and ∠BCA = 50°. The value of ∠BDA is:
The radius of the incircle of a triangle is 3 cm. if the area of the triangle is 12 cm 2 , then its perimeter is?
The length of the each side of an equilateral triangle is 7√3 cm . The area of circumcircle, (cm 2 ) is
- ABCD is cyclic quadrilateral in which A = 72º and B = 105º What is the difference between the measures of C and D?
If in a ΔABC, AD is internal angle bisector & D is a point on BC, AB = 6cm, BC = 9cm then what is BD:CD?
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