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 72Ï€ sq cm is removed. The perimeter of the leftover portion, in cm, is?
a) 88 + 12Ï€
b) 82 + 24Ï€
c) 80 + 16Ï€
d) 86 + 8Ï€
Answer: a) 88 + 12Ï€
Solution:
Given area of semicircle = 72Ï€
Or (Ï€r^2)/2 = 72Ï€
r = 12
So AB = 24
Thus 24×AD = 768
AD = 32
So Required perimeter = AD+CD+CB+Ï€r = 32+24+32+12Ï€ = 88+12Ï€
Other posts related to Quantitative Aptitude – Modern Maths
Permutation and Combination – Fundamental Principle of CountingPermutation 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 2020
a) 900+ 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