Explain how you will measure the area of

(a) a square

(b) a leaf?

Name the device which you will use to measure the perimeter of your play ground. Describe in steps how you will use it.

Convert the following quantities as indicated :

(a) 12 inch = …………… ft

(b) 1 ft = …………… cm

(c) 20 cm = …………… m

(d) 4.2 m = …………… cm

(e) 0.2 km = …………… m

(f) 0.2 cm = …………… mm

(g) 1 yard = …………… m

Express in second

(i) 3 minute 15 second, and

(ii) 5 hour 2 minute 5 second.