Explain how to calculate the circumference of a circle when given either a diameter or radius and also how to estimate the circumference of a circle for a multiple choice question. please help me

Giuseppi's pizza had orders for $931.00 of pizzas. the prices were $21 for a large pizza, 514 for a medium pizza, and $7 for a small pizza. the number of large pizzas was two less than four times the number of medium pizzas. thenumber of small pizzas was three more than three times the number of medium pizzas. how many of each size of pizza were ordered?

If g(x) is an odd function, which function must be an even function?

What other information do you need to prove triangle dac=bca by asa