The area of a right-angled triangle is 42 cm2 . If the length of one of its two sides containing the right angle is 10 cm, find the length of the other side that contain the right angle.
Answer & explanation
Correct answer: option 3
We know that,
Area of right angled triangle = \(\frac{1}{2}\) × Base × Height
We have,
Area of right-angle triangle = 42 cm2
Length of one side = 10 cm
= 42 = \(\frac{1}{2}\) × 10 × Length of other side
= Length of the other side = \(\frac{42}{5}\) = 8.4 cm