Calculate 58^2-42^2 ??

1600

Step-by-step explanation:

As you can see, this is a difference of squares. We can plug it into our differences of squares formula to get the

(a+b)(a-b)

(58+42)(58-42)

(100)(16)

= 1600

Hope you learned something!

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.