Request a call back

# ICSE Class 10 Answered

The perimeter of a rectangle is 60 cm. Take x as the breadth and express length in terms of x. If the area of a rectangle is 216 centimetre square, find the value of x.

Asked by khushdab | 01 Apr, 2020, 11:24: AM Expert Answer
Let the breadth of the rectangle be x.
We konw that,
Perimeter of a rectangle = 2(length + breadth)
2(length + x) = 60
→length = 30 - x

Area of a rectangle = length × breadth = 216  ....  given
→(30 - x)x=216
→ x2 - 30x + 216 = 0
→ x2 - 18x - 12x + 216 = 0
→ x(x - 18)-12(x - 18) = 0
→ (x - 18)(x - 12) = 0
→ x = 18 or x = 12
If breadth is 18cm then length is 12cm and if breadth is 12cm then length is 18cm.
Answered by Yasmeen Khan | 01 Apr, 2020, 01:33: PM

## Application Videos

ICSE 10 - Maths
Asked by sahilnaik96.10spicertl | 05 Mar, 2021, 07:43: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by suneelmsc | 02 May, 2020, 01:41: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by khushdab | 02 Apr, 2020, 04:37: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by khushdab | 02 Apr, 2020, 04:12: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by khushdab | 01 Apr, 2020, 11:24: AM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by khushdab | 31 Mar, 2020, 02:00: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by jaiswalsindhuli717 | 09 Feb, 2019, 01:18: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by ushanihar12 | 06 Feb, 2019, 10:07: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by Lakhan123499 | 19 May, 2018, 02:01: PM ANSWERED BY EXPERT
ICSE 10 - Maths
Asked by Lakhan123499 | 19 May, 2018, 01:57: PM ANSWERED BY EXPERT