Alan T. answered • 10/03/15

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Stanford alum and mechanical engineer: No subject too big or too small

^{2}+ height

^{2}) recognizing that there is a right triangle there. Since slant height increased by 4 cm when its height increased by 2cm, you know that the length/2 term had to increase by the square root of 12 (2

^{2}+root(12)

^{2}) = 4

^{2}=16. From there you can figure out the rest pretty readily.