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The task of designing things – like, gardens, for example – can be made much simpler if you have a basic understanding of shape and space. If you're putting up a fence around a garden and you need to calculate the total length of fencing you need, you'll save some money by ordering the correct amount. Or if you're putting fertiliser on a strange-shaped lawn, you can work out its surface area by breaking it down into smaller shapes.

If you wanted to dig a circular pond, you can use the radius of a circle to help calculate its area. And you can use the depth of a shape to calculate its volume. So when working out how far to dig, you don't have to depend on guesswork.

Understanding shapes and spaces can be surprisingly useful for something like gardening. But it won't help everything.