Find the area of the right angled triangle if the longest side of a right angled triangle is 17 cm and the height is 15 cm.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 60 cm2.
Area = (1/2) × base × height
The Pythagorean theorem states:
a2 + b2 = c2
base = b
hypotenuse (c) = 17 cm
height (a = 15) cm:
⇒ 152 + b2 = 172
⇒ 225 + b2 = 289
⇒b2 = 289 - 225 = 64
⇒ b = = 8 cm
Area = = 60 cm2
Thus, the area of the triangle is 60 cm².