**21**. Given that** a = 2** and **b = 3**, evaluate

A. 28

B. 8

C. −7

D. −28

**22**.

Which of the following is illustrated on the number line above?

**23**.

In the diagram above, **A** is the centre of the circle with radius 20 cm. If angle **BAC**is 90°, find the perimeter of the shaded sector. [Take **π** **=** 3.14]

A. 7.14 cm

B. 31.8 cm

C. 40.0 cm

D. 51.4 cm

**24**.

In triangle ABC, |AB| = |BC| = 5 cm and |AC| = 8 cm. Find |BD|

A. 3 cm

B. 4 cm

C. 9 cm

D. 33 cm

**25**. Write ¢35,632.00 correct to the nearest thousand cedis.

A. ¢40,000.00

B. ¢36,000.00

C. ¢35,600.00

D. ¢35,000.00

**26**. Solve for **x** if

**27**. Evaluate

**28**. A boy walked 7 km on a bearing 060°. which of the following diagrams shows his direction?

A.

B.

C.

D.

**29**. In the following diagram *G1OH1* is an enlargement of triangle *GOH* with scale factor k. If |GG| = 5 cm, |GO| = 2 cm and |G1H1| = 1 cm, what is the value of k?

**30**. If 14x = 9_{ten} find x.

A. Five

B. Eight

C. Seven

D. Six