Scale Drawings: Quiz / Assessment (7.G.A.1)
Answer all questions. You may not use a calculator unless told otherwise. Show working where asked.
A map has a scale of 1 cm : 25 km. Two towns are 7 cm apart on the map. What is the actual distance between them?
A triangle is enlarged by a scale factor of 4. By what factor does its area increase?
True or False: If a drawing is made at a scale of 1 cm : 100 cm, then 1 cm on the drawing represents 1 metre in real life.
A blueprint uses a scale of 1 cm : 2.5 m. A rectangular room measures 4 cm by 3 cm on the blueprint. Find (a) the actual dimensions and (b) the actual floor area. Show your working.
A garden path is 12 m long in real life. It is shown on a plan drawn at a scale of 1 cm : 3 m. The plan needs to be redrawn at a scale of 1 cm : 4 m. How long is the path on (a) the original plan and (b) the new plan?