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Quick questions on Similarity: scale factors for length, area and volume - SQA National 5 Maths

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Two similar triangles have bases 55 cm and 2020 cm. Find the scale factor. [1 mark]
What is q2?
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Two similar shapes have lengths in ratio 1:21:2. The smaller has area 77 cm2^2. Find the larger area.
What is q3?
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Two similar solids have lengths in ratio 1:31:3. The smaller has volume 55 cm3^3. Find the larger volume.

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