For right triangle ABC with right angle at C, a = 20 cm and c = 29 cm. Find b .
A) 8.5 cm
B) 9 cm
C) 21 cm
D) 38.4 cm

Question

Quizplus · Accepted Answer

In a right triangle, the Pythagorean theorem states that $a^2 + b^2 = c^2$. Given $a = 20$ cm and $c = 29$ cm, we can solve for $b$: $20^2 + b^2 = 29^2$, which simplifies to $400 + b^2 = 841$. Subtracting 400 from both sides gives $b^2 = 441$, and taking the square root of both sides gives $b = 21$ cm.

For Right Triangle ABC with Right Angle at C, a =