**Question 3:**

The diagram above shows a right prism attach to a cuboid at one of its plane.

*ABCG*and*CDEF*,*IJNH*and*KLMJ*are horizontal planes,*ABIH*,*AGNH*and*GCJN*are vertical planes while*IBCJ*is an inclined plane.*HA*= 3 cm,*BC*= 3 cm,*CD*= 1.5 cm,*HI*=*NJ*=*JK*= 3 cm. Draw to full scale*AB*as viewed from X.

(b) A solid semi-cylinder is joined to the solid in A as show in the diagram above.

*JPON*is a vertical plane and*JP*= 1.5 cm. Draw to full scalei. The plan of the solid

ii. The elevation of the solid on a vertical plane parallel to

*BCD*as viewed from Y.

**Solution**:**(a)**

**(b)(i)**

**(b)(ii)**

**Question 4**:

The diagram above shows a solid consisting of a right prism and a half-cylinder which are joined at the plane HICB. The base ABCDEF is on a horizontal plane. The rectangle LKJG is an inclined plane. The vertical plane JDEK is the uniform cross-section of the prism. AB = CD = 2 cm. BC = 4 cm. CM = 12 cm.

Draw to full scale

(a) The plan of the solid

(b) The elevation of the solid on a vertical plane parallel to ABCD as viewed from X.

(c) The elevation of the solid on a vertical plane parallel to DE as viewed from Y.

**:**

*Solution***(a)**

**(b)**

**(c)**