It’s the first Wednesday of June which means it’s time for our monthly linky – Math IS Real Life!! If you want to see how the linky works, or just want other real world math ideas, check out our Pinterest Board of all the posts so that you can look back and find some great ideas and REAL pictures to use in your classroom!

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A monthly REAL WORLD math blog link-up hosted by

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It’s summer here at the MathDork houses which means it’s time to get some house projects done!  Once I begin a project, I don’t really like to stop until it’s complete…. so I needed to stop by the grocery store to pick up some fast, easy lunches to help minimize the downtime while in project-mode.

One of my go-to lunches are personal pizzas.  Quick. Easy to eat. Clean up is super easy. Delicious.

When I reached in to grab my usual, I noticed the package had changed…. drastically.

I also noticed the label in the corner “Same amount of pizza, now less packaging”.  For some reason I took that label as a challenge — yes, yes, I *am* that person….

The pizzas just didn’t seem to be the same size, albeit the packaging was definitely less.   The round pizza has both cardboard box packaging and a plastic shrink wrap around it.  The rectangular pizza only had a plastic packaging.

The round pizza had a diameter of approximately 8 inches.

Area of a circle = pi * r * r

Area of the circular pizza = pi * 4 inches * 4 inches

Area of the circular pizza = 16 pi square inches

Area of the circular pizza = approximately 50.264 square inches

The rectangular pizza had a height of approximately 7 inches…

… and a width of approximately 8 inches.

Area of a rectangle = height * width

Area of the rectangular pizza = 7 inches * 8 inches

Area of the rectangular pizza =approximately 56 square inches

The area of the circular pizza is approximately 50.264 square inches

The area of the rectangular pizza is approximately 56 square inches.

WOW!  Not only did the company SAVE money and trash by having LESS packaging, they ended up giving me MORE pizza! I’ll be quite honest, I was expecting the round pizza to be larger, even if only slightly! Kudos to the company for now short-changing the pizza… though, I bet them mentioning the pizza being a bit bigger would be good for marketing!

Edit:  I went back and looked and the weights of both pizzas are the same.  I then checked the thickness of the pizza and the rectangular pizza is slightly thinner.  It appears that the AREA of the rectangular pizza is larger, but not the thickness 🙂

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Don’t forget to check out the other MIRL posts below!  Check back over the next few days – more will be added!!

1. Pam Richmond

Very cool! Do the packages give the same weights? I think that the box says 10.2 oz. (?), but I don’t see a weight on the newer one.

• Good catch! The weights are the same. I went back and checked and the rectangular pizza is slightly thinner. Guess they made the area larger but not the thickness 🙂

• Pamela Richmond

So now the next question is: By what percent would the thickness (height) of the newer pizza have to increase if the volumes (weights?) are the same, despite the increase in area . . .

2. Sadly, I find the rectangular pizza does not heat as evenly in the microwave. 🙁 Made me sad… it didn’t taste quite as good as I got towards the center to find it not so well-cooked! Next time, I tried to cook it a bit longer, only to get the edges too-well-done and the center still not-quite-done 🙁 Maybe its my microwave, though! Loved the article… I, too, am “that” person!!

• I haven’t tried using the microwave on the pizzas in years. I typically throw them in the oven so they have a nice crisp. Having a 7×8 would make sense that the center didn’t cook quite as evenly though. Interesting find!