**The area of the triangle described**will be √231 cm^2 ≈

**15.20 cm^2**. The height will be computed from

area = (1/2)*(base)*(height)

2*area/base = height

2*(15.20 cm^2)/(10 cm) =

**3.04 cm = height**

A triangle with a

**base of 10 cm and an area of 16 cm^2**will have a height of

2*(16 cm^2)/(10 cm) =

**3.2 cm, corresponding to choice (c)**.

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Your math text is in error as often as not, apparently. Please lobby for a new one.