Quantitative Aptitude – Geometry – Rectangle – From a rectangle ABCD of area 768 sq cm

Quantitative Aptitude – Geometry - Rectangle – From a rectangle ABCD of area 768 sq cm

Slot -2 – Quantitative Aptitude – Geometry – Rectangle – From a rectangle ABCD of area 768 sq cm

From a rectangle ABCD of area 768 sq cm, a semicircular part with diameter AB and area 72π sq cm is removed. The perimeter of the leftover portion, in cm, is?

a) 88 + 12π

b) 82 + 24π

c) 80 + 16π

d) 86 + 8π

Answer: a) 88 + 12π

Solution:

Given area of semicircle = 72π
Or (πr^2)/2 = 72π

r = 12
So AB = 24

Thus 24×AD = 768

AD = 32
So Required perimeter = AD+CD+CB+πr = 32+24+32+12π = 88+12π

Other posts related to Quantitative Aptitude – Modern Maths

Permutation and Combination – Fundamental Principle of Counting
Permutation and Combination – Distribution of Objects
How to find Rank of a Word in Dictionary (With or Without Repetition)
Set Theory- Maximum and Minimum Values
How to solve questions based on At least n in Set Theory for CAT Exam?
Sequence and Series Problems and Concepts for CAT 2017 Exam Preparation
Basic Probability Concepts for CAT Preparation

Online Coaching Course for CAT Exam Preparation

a) 750+ Videos covering entire CAT syllabus
b) 2 Live Classes (online) every week for doubt clarification
c) Study Material & PDFs for practice and understanding
d) 10 Mock Tests in the latest pattern
e) Previous Year Questions solved on video

Know More about Online CAT Course

Leave a Reply

Your email address will not be published. Required fields are marked *