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Just find the length of the bottom side.

If you're looking for how to solve it with algebra, given: Area=30 and Height=4

Remember: Area of a triangle = 1/2 (base ) x (height)

Then write the equation: 30 = 1/2 (base) x (4)

To solve it, divide each side by 2 :

15 = (base)

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Q: How do you find a base of a triangle?
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