Table of Contents

## How do you find the square of a number?

Multiply the top number of the fraction by itself to find its square. Write the result and place the fraction line below it. For example, with (8/2)2, you’d multiply 8 by 8 to get a numerator of 64.

**What is the formula of square?**

Perimeter, Area, and Volume

Table 2. Area Formulas | ||
---|---|---|

Shape | Formula | Variables |

Square | A=s2 | s is the length of the side of the square. |

Rectangle | A=LW | L and W are the lengths of the rectangle’s sides (length and width). |

Triangle | A=12bh | b and h are the base and height |

### How do you square a number without a calculator?

- Examples.
- Finding square roots of of numbers that aren’t perfect squares without a calculator.
- Example: Calculate the square root of 10 ( ) to 2 decimal places.
- Find the two perfect square numbers it lies between.
- Divide 10 by 3.
- Average 3.33 and 3. (
- Repeat step 2: 10/3.1667 = 3.1579.

**What is the 20th square number?**

Square Numbers 1-20

A | B |
---|---|

17 squared | 289 |

18 squared | 324 |

19 squared | 361 |

20 squared | 400 |

## What is the formula to figure square feet?

The most common square feet area formulas are: Square: A = s2 (Side Squared) Rectangle: A = ab (Side A x Side B) Circle: A = πr2 (Pi x Radius Squared)

**How do you calculate the square footage of a countertop?**

Multiply your total length by 26, the width in inches of standard countertops, to find total countertop area in square inches. So, 44 inches times 26 inches yields 3,744 square inches. Multiply 144 inches by 4 inches to find your total backsplash area in square inches.

### How do you calculate area in sq ft?

Calculate the Area as Square Footage If you are measuring a square or rectangle area, multiply length times width; Length x Width = Area. For other area shapes, see formulas below to calculate Area (ft 2) = Square Footage.

**How do you calculate square inches?**

To calculate its area in square inches, you must take three measurements (in inches): The length of the longer parallel side (“B”), the length of the shorter parallel side (“b”), and the trapezoid’s height (“h”) – the distance between the two parallel sides, measured at a right angle.