How could you find how many blocks there were in 20 stories

99/10 as a mixed fraction

The triangle shown is rotated about line m. A triangle with side lengths of 6 centimeters, 8 centimeters, and 10 centimeters is shown. The triangle is rotated about line m at the side with length 8 centimeters.

Calculate the radius of the circular rug. Use 3.14 for π. area of rug: 153.86 feet

0.81 repeating decimal into a fraction

The selling price of an item is 600$. After 6 months of not selling, it is marked down by 10%. After another 6 months of not selling, it is further marked down by 20%. Find the sale price after both markdowns.

15% of what number is 1?

Does parallel lines meet to form an acute angle?

In a recent year, 31.4% of all registered doctors were female. If there were 55,400 female registered doctors that year, what was the total number of registered doctors?

What is 0.5, 3/16, 0.75, 5,48 in order from least to greatest

What is 3839 divided by 283