Pythagoras in surd form

When calculating the distance between two points – whether it’s across a field, up a ladder, or even in a video game – Pythagoras’ Theorem is your go-to tool. But sometimes the answer isn’t a neat whole number. That’s where surds come in: they let us leave square roots in their exact form, keeping your answers precise without reaching for a calculator. Jump to the questions

Practise now

Give your answer in the form a√x and in its simplest form.

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