Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 8 Answered

if perimeter increased by 25% then area increased by how much
Asked by kisanravghodke | 04 Jan, 2023, 08:17: PM
Expert Answer
The question must include a particular quadrilateral.
Assuming the quadrilateral to be square, the question must be:
Q. If perimeter increased by 25% then area increased by how much
Solution:
Perimeter of a square = 4(side) = 4a
Area of a square = (side)2 = a2
When space the space perimeter space is space increased space by space 25 percent sign New space perimeter space equals space straight P space plus space 25 percent sign space of space straight P space equals space fraction numerator 4 straight P over denominator 5 end fraction equals fraction numerator 4 left parenthesis 4 straight a right parenthesis over denominator 5 end fraction equals 1.25 left parenthesis 4 straight a right parenthesis New space side space of space square space equals space Perimeter over 4 equals 1.25 straight a New space area space equals space left parenthesis New space side right parenthesis squared space equals left parenthesis 1.25 straight a right parenthesis squared space equals space 1.5625 space straight a squared percent sign space increase space in space area space equals space fraction numerator New space area space minus space original space area over denominator Original space area end fraction cross times 100 equals fraction numerator 1.5625 straight a squared minus straight a squared over denominator straight a squared end fraction cross times 100 equals 0.5625 cross times 100 equals 56.25 space percent sign
Answered by Renu Varma | 06 Jan, 2023, 09:14: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 8 - Maths
if perimeter increased by 25% then area increased by how much
Asked by kisanravghodke | 04 Jan, 2023, 08:17: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
how to do mensuration
Asked by gopikalekshmi6 | 05 Jan, 2022, 06:07: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
find the area
Asked by 0 Mili_28😉😁🤗 | 06 Nov, 2020, 05:39: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
Find the area of the rhombuses whose diagonals  are 46cm and 20 cm    
Asked by alimirza43015 | 11 Aug, 2020, 09:25: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
A caspet is 6m long and 4.5m wide .Find it's area
Asked by soujanyarajendrababu | 08 Jun, 2020, 01:20: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
find the length of side of  a square whose area is given (4xsquare+20x+25)cm
Asked by tanwardevdutt122 | 28 May, 2020, 10:30: AM
ANSWERED BY EXPERT
CBSE 8 - Maths
Qns. 1
Asked by krishna015071989 | 11 Jan, 2020, 10:25: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
Length of the fence of a trapezium shaped field ABCD is 120m. If BC=48m,CD=17m andAD=40m find the area of this field. Side AB is perpendicular to the parallel sides
Asked by karatsuja | 06 Jan, 2020, 10:48: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
A floral design on the floor of a building consists of 2800 tiles. Each tile is in the shape of a parallelogram of altitude 10cm and base 14cm. Find the area of the floor covered by the floral design.
Asked by parkhidwivedi12 | 25 Dec, 2019, 03:35: PM
ANSWERED BY EXPERT
CBSE 8 - Maths
the area of a rectangular field is 3a squared+5ab+2b squared.one of its sides is (a+b).find the lenght of the fence around the field.   the area of one face of a cubicle water tank is 14400 sq.cm .if the tank is full,how many 3 litre bottles of water can be filled from this?
Asked by Trisha Gupta | 04 Sep, 2019, 01:54: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt