**Pi** refers to the circumference ratio to its diameter and is represented by the symbol **Õ**. The size of a circle is slightly three times larger than its diameter; that is why **3.142** is used as a constant. So when you ask, what is **90** times **Pi**, it means that you are looking for the Circumference of a circle whose diameter is **90**. Therefore, **90** times **pi** is: **282.78.**

**Pi **is also presented as 22/7 other times because it’s an irrational number. This means when you divide 22 by 7, you will get an infinite number of decimals (3. 14159265358). That’s why in most cases, you will find **Pi** represented by just **3.142**

So **90** times **Pi **means **90** times **3.142** = **282.78**

Therefore, **90** Times **Pi** is **282.78**

**How to Find the Circumference of a circle
**

Circumference refers to the perimeter of a circle.

The formula for finding Circumference is **diameter times pi (Õ)**

Let’s assume the diameter is **90**

So the Circumference will be:

**90 **times **3.142 **Which is **282.78**

**How to find the diameter given the Circumference of a circle
**

Since we know Circumference = **Diameter X pi (Õ)**

We can divide Circumference by **Pi** to find the diameter

The formula for finding a circle’s diameter is** D = C / Õ
**

**D **–Diameter

**C **–Circumference

**Õ** – Pi

Assuming **90** is the Circumference the diameter of the circle will be

**90 / 3.142,** which is **28.64417568**

**How to find the radius(r) given the Circumference of a circle
**

Radius refers to a straight line from the center to the circle’s Circumference. It is half-diameter in size.

The formula for finding radius is: **r = C/2Õ
**

**r** – Radius

**C** – Circumference

**Õ** – Pi

Assuming **90** ** **is the Circumference. The radius of the circle will be

**90 / 2 x 3.142,** which is **14.32208784**

**How to find the area of a circle
**

The area of a given circle is the total area that the circle covers

The formula for finding a circle’s area is:

**A = Õr²
**

**A **– Area

**Õ** – Pi

**r** – Radius

Assuming the radius of the circle is **90**

The area of the circle will be

**3.142** x **90²**

Which is **25450.200
**

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