A circular garden has a circular fountain in the center. The outer edge of the fountain is 7.5 feet from the outer edge of the garden. The diameter of the fountain is 5 feet. What is the circumference of the garden?

The circumference of the garden is 62.84 ft

Step-by-step explanation:

Given;

diameter of the fountain, d = 5 feet

radius of the fountain, r = d / 2 = 2.5 feet

distance between the outer edge of the fountain and the garden = 7.5 feet

The radius of the garden = radius of the fountain + outer edge distance

The radius of the garden = 2.5 feet + 7.5 feet = 10 feet

The circumference of the garden = 2πr

The circumference of the garden = 2 x π x 10

The circumference of the garden = 62.84 ft

Therefore, the circumference of the garden is 62.84 ft

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

$9.89

step-by-step explanation:

9.90 = p x .06 x .25 (3/12 changed to a decimal)

9.90 = p x 0.015

9.90 - 0.015 = p

9.89 = p