Find the surface area of a sphere in terms of pi given the radius of 25 inches

The area of a circle is equal to 1 dm². find the radius of the circle.

How many heads would you expect if you flipped a coin twice? first, fill in the table below with the correct probabilities. hint: the sample space for flipping a coin twice is {hh, ht, th, tt}. a = b = c = f

Hundred and tens tables to make 430 in five different ways