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
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
APPEARS IN
RELATED QUESTIONS
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: 6y5
Find a number which when multiplied by 5 is increased by 80.
Find two numbers such that one of them is five times the other and their difference is 132.
The sum of two consecutive even numbers is 74. Find the numbers.
A man is 4 times as old as his son. After 16 years he will be only twice as old as his son. Find their present ages.
If m is a whole number, then 2 m denotes a multiple of 2.
The additive inverse of an integer x is 2x.
If x is a negative integer, – x is a positive integer.
A cube is a three-dimensional figure as shown in the given figure. It has six faces and all of them are identical squares. The length of an edge of the cube is given by l. Find the formula for the total length of the edges of a cube.

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 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 squares of first n natural numbers is given by `1/6n(n + 1)(2n + 1)` or `1/6(2n^3 + 3n^2 + n)`. Find the sum of squares of the first 10 natural numbers.
The sum of the multiplication table of natural number ‘n’ is given by 55 × n. Find the sum of table of 7.
If
= 2x + 3,
= `3/2x + 7` and
= x – 3 then find the value of:
2
+
– ![]()
If
= `3/4x - 2` and
= x + 6, then find the value of:
– ![]()
If
= `3/4x - 2` and
= x + 6, then find the value of:
2
– `3/2`![]()
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?
