Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
86 views
in Quadrilaterals by (36.7k points)
closed by

The length and breadth of a rectangle is 3 cm and 4 cm then the length of its diagonal is ……………….. cm. 

A) 9 

B) 10 

C) 6 

D) 5

2 Answers

+1 vote
by (57.0k points)
selected by
 
Best answer

Correct option is (D) 5

Let AB = 4 cm & BC = 3 cm in rectangle ABCD.

Since, all angles are \(90^\circ\) in a rectangle.

i.e.\(\angle A=\angle B=\angle C=\angle D=90^\circ\)

Now, in right angled \(\triangle ABC,\) we have

\(AC^2=AB^2+BC^2\)

\(=4^2+3^2\) = 16+9 = 25 \(=5^2\)

\(\therefore\) AC = 5 cm

Thus, the length of diagonal of rectangle ABCD is 5 cm.

+2 votes
by (38.9k points)

Correct option is  D) 5

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...