The regular solid figure represented by the net in the figure is called:
Square.
Cuboid.
Cube.
Cylinder.
A polygon having nine sides is called:
Decagon.
Octagon.
Nonagon.
Heptagon.
The sum of the exterior angles of any polygon is:
270°.
360°.
90°.
180°.
A rectangular sheet of paper of sides 12cm by 8cm has a semi-circular piece cut out of it as shown in the figure.
The area of the unshaded portion in terms of π is:
8(12 - π) cm².
96 π cm².
8 π cm².
64 π cm².
The perimeter of a rectangle is 24 cm.
Given that its width is 5 cm, then its length is:
4 cm.
7 cm.
5 cm.
8 cm.
