Mensuration - Mathematics Jamb Past Questions and Answers

Question 26 :

• JAMB 1978

A hollow right prism of equilateral triangular base of side 4cm is filled with water up to a certain height. If a sphere of radius \(\frac{1}{2}\)cm is immersed in the water, then the rise of water is

A. 1cm
B. \(\sqrt{\frac{3\pi}{24}}\)
C. \(\frac{\pi}{24\sqrt{3}}\)
D. 24\(\sqrt{3}\)

Question 27 :

• JAMB 1978

A solid sphere of radius 3cm, a solid right cone of radius 3cm and height 12cm and a solid right circular cycular of radius 3cm and height 4cm.Which of the following statements is true?

A. The volume of the sphere is greater than the volume of the cone
B. The volume of the cone is less than the volume of the cylinder
C. The total surface area of the cone is greater than that of the sphere
D. The total surface area of the cylinder is less than that of the sphere
E. The total sufeac area of the cone is equal to that of the cylinder

Question 28 :

• JAMB 1978

Two triangles have the same areas if

A. Two sides in one triangle are equal to two sides in the other
B. Three sides in one triangle are equal to three sides in the other
C. Two angles in the triangle are equal to two angles in the other
D. Three angles in one triangle are equal to three angles in the other
E. One side and the opposite angle in one triangle are equal to one side and the opposite angle in the other

Question 29 :

• JAMB 1979

A square of cardboard is taped at the perimeter by a piece of ribbon 20cm long. What is the area of the board?

A. 20sq.cm
B. 100sq.cm
C. 25sq.cm
D. 16sq.cm
E. 36sq.cm

Question 30 :

• JAMB 1979

A steel ball of radius 1 cm is dropped into a cylinder of radius 2cm and height 4cm. If the cylinder is now filled with water, what is the volume of the water in the cylinder?

A. \(\frac{44}{3}\)\(\pi\)cm³
B. 12\(\pi\)cm³
C. \(\frac{38}{3}\)\(\pi\)cm³
D. \(\frac{40}{3}\)\(\pi\)cm³
E. \(\frac{32}{33}\)\(\pi\)cm³