How to find the circumference of a circle

Area of a parallelogram if it was 2 cm and 6 cm

A 300 gram serving of walnuts has 180 calories. How many calories are in a 100 gram serving of walnuts?

10x+6 less than or equal to 8x-12

Toya can run one lap in 1 min. 3 sec., which is 90% of her younger sister niki's time. what is niki's time for one lap?

What is the probability of drawing an even number from a deck of cards numbered 1 to 14?

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.