Question

8/
Question 8
39:8
A pyramid is made of metal balls. The lowest layer consists of 4 x 4 balls, the next
layers of 3 x 3 and 2 x 2, and one ball at the top. Every two balls that touch each
other are connected with a screw. How many screws are used to build this pyramid?
F​

Answer 1

Step-by-step explanation:

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