When is it logical to use 22/7 instead of 3.14 for pi

The circumference of a clock is 22 inches what is the radius of a clock

9x - 9y = 18 y = 8 Solve a system of equations using substitution.

The area of the top of a rectangular prism is 20 cm². The area of the front is 16 cm² and the area of one side is 24 cm ². What is the surface area of the rectangular prism? A. 30 cm² B. 60 cm² C. 120 cm² D. Cannot be determined

What is the probability that when a fair coin is flipped 25 times, there will be exactly five heads? a. 0.00158 b. 53130 c. 1660.3 d. 0.1900

How would you group the numbers to solve 7*2*4? why?

A rectangle has length (4x+ 5) and breadth 3x. Find the area of the rectangle.

A pattern has 1,000 identical circles. If 665 of the circles are orange, what decimal represents the part of the pattern that is orange? Why? A. 665 B. 66.5 C. 6.65 D. 0.665

3.) What is h (5) ? What does this mean?

I was wondering how to find these things about the Singapore flyer (ferries wheel) ? The measure of the central angle in degrees, the measure of the central angle in radian, the arc length between two cars, and the area of a sector between two cars?

What is Charlotte has 12 T-shirts one fourth of her two shirts are green how many of charlottes T-shirts are green?