Severity: Warning

Message: count(): Parameter must be an array or an object that implements Countable

Filename: controllers/calculator.php

Line Number: 37

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Given algebraic expression: (x + 4)

The appropriate formula for the above expression is >

From the given expression, we can say that > a = x and b = 4

So applying the given formula we get.

(x + 4)

Given information: length, l = 3m and width, w = 5m

In order to find the area of the rectangle we can use its Area formula.

So using the above formula, we plug in the given numbers in the place of length and width.

Area, A = 3m * 5m