The number of quadrants in a circle is
1
2
3
4
The perimeter of the quadrant of a circle of diameter 84cm is
150cm
120cm
21cm
42cm
If the area of circle is 144cm2, then the area of its quadrant is ________
144cm2
12cm2
72cm2
36cm2
Area of a semi circle is ________ times the area of the circle.
two
four
one-half
one-quarter
Number of sides of a decagon is
7
8
9
10
If the radius of a circle is 7m, then the area of the semi circle is
77m2
44m2
88m2
154m2
The two diagonals of a rhombus are 10cm and 12cm then its area is.
120cm2
60cm2
80cm2
100cm2
Perimeter of a semicircle is ________
2r units
If radius of a circle is r units; then its perimeter is
