Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Mensuration: 2D

Question:

The base and hypotenuse of a right-angled triangle are 9 cm and 41 cm respectively. What is the area of the triangle?

Options:

180 cm2

170 cm2

190 cm2

160 cm2

Correct Answer:

180 cm2

Explanation:

We know that,

Area of right angled triangle = \(\frac{1}{2}\) × Base × Height

h2 = p+ b

Base = 9 cm,

 Hypotenuse = 41 cm 

So,

p2 = 412 – 92

= p2 = 1600

= p = 40

So, the area of right angled triangle = \(\frac{1}{2}\) × p × b

= area of triangle = \(\frac{1}{2}\) × 40 × 9 = 180 cm2