# How do you find the area of a rectangle and circle?

Space and AstronomyContents:

## How do you find a rectangle in a circle?

Video quote: *For relating these sides as L square length square plus width square equals to the diagonal is 2r. So we write this as 2 R square.*

## How do you find the area of a rectangular?

To find the area of a rectangle, **multiply its width by its height**. If we know two sides of the rectangle that are different lengths, then we have both the height and the width.

## How do you find area with a circle?

The area of a circle is **pi times the radius squared** (A = π r²).

## Can a rectangle be in a circle?

Actually – **every rectangle can be inscribed in a (unique circle)** so the key point is that the radius of the circle is R (I think). One of the properties of a rectangle is that the diagonals bisect in the ‘center’ of the rectangle, which will also be the center of the circumscribing circle.

## How do you find the shaded area of a rectangle with a circle in it?

Calculate the area of both shapes. The area of a rectangle is determined by multiplying its length times its width. The area of a circle is Pi (i.e., 3.14) times the square of the radius. Find the area of the shaded region by **subtracting the area of the small shape from the area of the larger shape**.

## How do you find the area of each shaded region?

Video quote: *Again the radius is the distance from the center point of the circle to the edge of the circle.*

## What is the area of shaded portion?

Area of the shaded region = **area of the square – area of the four unshaded small squares**.

## How do you find the area of the shaded region?

The Area of the shaded region = **(Area of the largest circle) – (Area of the circle with radius 3) – (Area of the circle with radius 2)**. Whatever is left over is the shaded region.

## How do you find the area of a circle in a square?

When a circle is inscribed in a square, the length of each side of the square is equal to the diameter of the circle. That is, the diameter of the inscribed circle is 8 units and therefore the radius is 4 units. The area of a circle of radius r units is **A=πr2** .

## How do you find the shaded and unshaded region of a circle?

To get the area of the shaded region, **subtract the area of the smaller circle from the area of the larger circle**.

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