Given the formula A = πr², expressing r in terms of A and π gives:
A / √π².
√(A/π).
√A / π.
A/π.
The length of a rectangle is twice its width.
Given that the width is ycm, then the area of the rectangle is:
2y².
y².
4y².
2y.
The sum of the exterior angles of any polygon is:
90°.
180°.
360°.
270°.
The volume in cm³ of a cone with height 10cm and base radius 6 cm in terms of π is:
60π.
180π.
360π.
120π.
The number of edges that a cuboid has is:
12.
8.
10.
6.
