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In an isosceles right triangle each equal side is 10 cm. The hypotenuse is

A5 sqrt(2) cm
B20 cm
C10 sqrt(3) cm
D10 sqrt(2) cm
Answer & Solution
Correct answer: D. 10 sqrt(2) cm
1. Two legs equal 10 cm each. 2. c^2 = 100 + 100 = 200. 3. c = sqrt(200) = 10 sqrt(2) cm. 4. So option A is correct. _Source: Selina Concise Mathematics Class 9, Ch on Pythagoras Theorem (Mistral OCR'd PDF), section on isosceles right triangle_
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