Portfolio 7.2
1. Determine the scale factor for each reduction.
A.
Reduction
Original
B.
C.
2. A top view of a patio table is 105cm by 165cm. A reduction is to be drawn with scale factor
1
. Find the dimensions of the reduction.
5
3. A wheel has diameter 60 cm. Determine the diameter on a scale diagram if the scale factor is
0.07.
4. A square has side length 13.6 cm. The side length of the reduction is 3.4 cm. Determine the
scale factor.
5. A circle has diameter 15cm. The diameter of the reduction is 50 mm. Determine the scale
factor.
6. Which of triangles P, Q, R, and S are scale diagrams of triangle X?
X
P
Q
R
S
7. A building is 200 m tall. A scale model is built using a scale factor of 0.005.
Determine the height of the model to the nearest centimetre, if necessary.
1
8. A hockey rink measures 50 m by 25 m. A scale diagram is drawn using a scale factor of 500.
Determine the dimensions of the rink in the scale diagram to the nearest centimetre.
9. Square B is a reduction of square A. Determine the scale factor.