Keisha swims 18 feet from one side of her circular pool to the other swimming straight through the center. She then swims one time around the entire edge of her swimming pool.
Use 3.14 as pi.
Round your answer to the nearest tenth.

56.5 ft

Step-by-step explanation:

Here we know that:

- Keisha swims 18 feet from one side of her circular pool to the other swimming straight through the center --> this means that the diameter of the swimming pool is 18 feet, so

d = 18 ft

- Then, she swims one time around the entire edge of her swimming pool. --> this means that she swims along the perimeter of the swimming pool

The perimeter of a circle is given by

where d is the diameter. Therefore in this case, the length of Keisha's second swim is:

the answer to this question is in the pic

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.