The mathematically inclined geek will appreciate this graphic expression of Pi as the number 3.1415926... wrapped in the shape of the mathematical symbol for Pi!

Pi is a mathematical constant which represents the ratio of any circle's circumference to it's diameter. When a circle's diameter is 1, it's circumference is Pi!

This t-shirt is black in colour and features the most revered mathematical constant in the known universe!

Have fun memorising!

Available in:

Small - Chest: 95cm | Length: 66cm
Medium - Chest: 100cm | Length: 67cm
Large - Chest: 110cm | Length: 69cm

Select your size using the drop down menu to the right.

SKU GKS03
Brand SimplyCool
Product Box Weight 0.270kg
Related Categories Cool T-Shirts Geek Gifts Geek Gadgets & Gadgets for Geeks Black Gifts
Peter and Anne-Maree
Hello from Peter & Anne-Maree

CoolThings Australia is a Australian owned & operated small business located in Launceston, Tasmania.

The CoolThings Australia mission is to help you be the coolest gift giver in your family and circle of friends.

You know the feeling you get when you give a gift and the response is "That's so cool!" - that is what its all about!

CoolThings Australia was started in 2003 by Peter and Anne-Maree and is still led by them to this day. Their purpose in business is to be givers themselves and they support multiple organisations close to their hearts locally, nationally and internationally.

Both Peter and Anne-Maree and their team of cool giftologists thankyou for your support and are looking forward to serving you today!

Geeks Pi T-Shirt Reviews

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(5) Rick - Verified Customer

The surprise on the recipients face said it all. Speedy delivery. Kept up to date whilst in transit It’s almost unlimited in all the cool things (pun intended) you can get, especially for those who like gifts that are unique I’m adding an extra star, even though I’m limited to 5...

(5) Rick - Verified Customer

The surprise on the recipients face said it all. Speedy delivery. Kept up to date whilst in transit It’s almost unlimited in all the cool things (pun intended) you can get, especially for those who like gifts that are unique I’m adding an extra star, even though I’m limited to 5...

(5) Sue - Verified Customer

I wanted 3 small cool gifts for my grandsons..so happy, they arrived on time. Hope the grandies love them....

(5) Janne - Verified Customer

Great service fast delivery fab game...

(5) neens - Verified Customer

I needed to make a last minute present for the family 'Santa re-gift' group which was a slightly stressful situation!! I had a look at coolthings and was so impressed with all the interesting items available. I made my purchase & received a confirmation email straight away & my order was received the next day. Thanks so much, great ...

(5) Joanne - Verified Customer

Fun stress reliever by pulling mice through holes in cheese. Stretchy. Speedy delivery. Great communication. Would buy again from this store. Many unique gifts to choose from....

(5) Jenny - Verified Customer

As always a great experience dealing with this wonderful Tassie Company. I have purchased several products overtime and have also been please with the products purchased and the fantastic & prompt service. ...

(5) Geraldine - Verified Customer

Prompt dispatch and delivery of ordered item. Easy site to navigate, and excellent customer service. I received a speedy reply to a question I had about my purchase....

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