**Question 6 (12 marks)**:

You are

**not**allowed

**to use graph paper to answer this question.**

**(a)**Diagram 6.1 shows two solid right prisms joined at the vertical plane

*EGLK*. The planes

*JKL*and

*MNP*are the uniform cross sections of the prism

*HEGLJK*and prism

*EFGMNP*respectively. The base

*EFGH*is a rectangle which lies on a horizontal plane. Edges

*HJ*and

*EK*are vertical.

**Diagram 6.1**

Draw, to full scale, the plan of the composite solid.

**Another solid half cylinder with a diameter of 4 cm is joined to the prism in Diagram 9.1 at the vertical plane**

(b)

(b)

*EFQR*. The composite solid is as shown in Diagram 6.2. The base

*HETFG*lies on a horizontal plane.

**Diagram 6.2**

Draw to full scale,

**(i)**the elevation of the composite solid on a vertical plane parallel to

*HE*as viewed from

*X*.

**(ii)**the elevation of the composite solid on a vertical plane parallel to

*EF*as viewed from

*Y*.

*Solution:*

**(a)**

**(b)(i)**

**(b)(ii)**