How do you get a volume of a sphere? I need the equation or a small tutorial.

Radius-7

2. If a seamstress is paid $7.85 per hour and works 18.75 hours in one week, how much is she paid for that week? A. $147.19 B. $146.00 C. $94.75 D. $212.85

A membership committee of three is formed from four eligible members. Let the eligible members be represented by A, B, C, and D. The possible outcomes include S = {ABC, ABD, ACD, BCD}. Which statements about the situation are true?

The equation y = 0.25x + 50 gives the cost y of renting a car if the car is driven x miles According to the model, what is the best estimate of the cost for renting a car if you plan to drive 250 miles? 50$ 62.50$ 112.50$ 300$

The height of the willis towns is 1450 feet. the petronas towers in malaysia are each 1482 feet tall. Which is taller explain

If an airplane in a 1 in.:4 ft scale drawing is 5 inches long, how long is the actual airplane?

A firework is fired vertically into the air at a speed of 100 m/s. The expression - 5t2 + 100t + 40 gives the height of the firework after t seconds. Factor this expression.

Six friends play golf. Their scores are 87,95, 92, 88, 91, and 96. What is the mean, median, and mode of the friends' scores?

X to the 2nd + 8x + 12 equals 0

4x^2-35x+49=0 solve by factoring

Bill pete and sue order 4 pizzas each with 14 slices bill eats 2/7 of 2 pizzas Pete eats 3/8 of 4 pizzas and Sue eats 1/14 of 3 pizzas how much is left over