English

The length of a side of square is given as 2x + 3. Which expression represents the perimeter of the square? - Mathematics

Advertisements
Advertisements

Question

The length of a side of square is given as 2x + 3. Which expression represents the perimeter of the square?

Options

  • 2x + 16

  • 6x + 9

  • 8x + 3

  • 8x + 12

MCQ
Advertisements

Solution

8x + 12

Explanation:

We know that, perimeter of the square = 4 × side

From the question it is given that, side length of the top of square table is 2x + 3

Then, perimeter = 4 × (2x + 3)

= (4 × 2x) + (4 × 3)

= 8x + 12

shaalaa.com
  Is there an error in this question or solution?
Chapter 10: Algebraic Expressions - Exercise [Page 315]

APPEARS IN

NCERT Exemplar Mathematics [English] Class 7
Chapter 10 Algebraic Expressions
Exercise | Q 16. | Page 315

RELATED QUESTIONS

Observe the patterns of digits made from line segments of equal length. You will find such segmented digits on the display of electronic watches or calculators.

If the number of digits formed is taken to be n, the number of segments required to form n digits is given by the algebraic expression appearing on the right of each pattern.

How many segments are required to form 5, 10, 100 digits of the kind −


Use the given algebraic expression to complete the table of number patterns.

S. No


Expression

Terms
1st 2nd 3rd 4th 5th ... 10th ... 100th ...
1 2n - 1 1 3 5 7 9 - 19 - - -
2 3n + 2 5 8 11 14 - - - - - -
3 4n + 1 5 9 13 17 - - - - - -
4 7n + 20 27 34 41 48 - - - - - -
5 n2 + 1 2 5 10 17 - - - - 10001 -

Write down the following in the product form: 10a3b3c3


If 9 is added to a certain number, the result is 36. Find the number.


If 11 is subtracted from 4 times a number, the result is 89. Find the number.


When Raju multiplies a certain number by 17 and adds 4 to the product, he gets 225. Find that number.


One out of two numbers is thrice the other. If their sum is 124, find the numbers.


Deepak is twice as old as his brother Vikas. If the difference between their ages is 11 years, find their present ages.


The perimeter of the triangle shown in the following figure is ______.


If m is a whole number, then 2 m denotes a multiple of 2.


The side of a regular hexagon is denoted by l. Express the perimeter of the hexagon using l. 

(Hint: A regular hexagon has all its six sides equal in length.)


The diameter of a circle is a line which joins two points on the circle and also passed through the centre of the circle. (In the adjoining figure AB is a diameter of the circle; C is its centre.) Express the diameter of the circle (d) in terms of its radius (r).


The expression for the number of diagonals that we can make from one vertex of a n sided polygon is ______.


The speed of car is 55 km/hrs. The distance covered in y hours is ______.


A wire is (7x – 3) metres long. A length of (3x – 4) metres is cut for use. Now, answer the following questions:

  1. How much wire is left?
  2. If this left out wire is used for making an equilateral triangle. What is the length of each side of the triangle so formed?

The sum of first n natural numbers is given by `1/2n^2 + 1/2n`. Find the sum of first 5 natural numbers.


The sum of first n natural numbers is given by `1/2n^2 + 1/2n`. Find the sum of natural numbers from 11 to 30.


The sum of the multiplication table of natural number ‘n’ is given by 55 × n. Find the sum of table of 10.


If = 2x + 3,  = `3/2x + 7` and  = x – 3 then find the value of:

2 +


Write an expression for the sum of 1 and twice a number n. If you let n be any odd number, will the result always be an odd number?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×