4.2.2 Scale Drawings, PT3 Focus Practice

Question 4:
Diagram below shows polygon.


(a) If the polygon is redrawn using the scale 1 : 500, calculate the length of side drawn for the side 15 m.
(b) On the square grids in the answer space, redraw the polygon using the scale 1 : 500. The grid has equal squares with sides of 1 cm.

Answer:
$\begin{array}{l}\text{(a)}\\ \text{Length of side of the drawing}\\ =\frac{15}{5}\\ =3\text{ cm}\end{array}$

(b)

Question 5:
Diagram below shows a polygon PQRSTU.


(a) If the polygon is redrawn using the scale 1 : 400, calculate the length of PQ.
(b) In the answer space, redraw the polygon using the scale 1 : 400. The grid has equal squares with sides of 1 cm.

Answer:
(a)

$\begin{array}{l}\text{Length of }PQ=\frac{4800\text{ cm}}{400}\\ =12\text{ cm}\end{array}$

(b)