Diagram 3.3 shows a cylinder of radius 12 cm. Its height is twice of its base diameter. Suhaila has a straight iron stick of length 54 cm. Could the iron
stick fit completely into the cylinder? Give your reason by showing the suitable
calculation.

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

Which of the following is an equation of a line parallel to the equation y=4x+1?

Amachine part consists of a half sphere and a cylinder, as shown in the figure. the total volume of the part is π cubic inches.