Find the circumfrence of a 42 cm circle

a. give an exact answer in terms of . (1 point)
b. use ≈ 22/7 , and express your answer as a fraction in lowest terms. (1 point)
3. a circle has a diameter of 20 inches.
a. give the exact answer for area in terms of . (1 point)
b. find an approximate area using ≈ 3.14. (1 point)
4. a circle has a radius of 5.5 inches.
a. give an exact answer for area in terms of . (1 point)
b. find an approximate area using ≈ 3.14. (1 point)
5. using the figure below, find the area of the circle using ∏≈ 22/7 (1 point)

15

step-by-step explanation:

we are given the following expression and we are to solve it and find the product:

-13 × (-5)

solving the given expression in the standard order of solving a mathematical expression, beginning with the opening of brackets and then multiplying the terms and changing their signs.

-3 × -5 = 15 (answer is positive because when negative is multiplied with negative, it gives a positive answer)

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

answer: 40392

step-by-step explanation:

10098 x 4 = 40392