A. Calculate the circumference of a circle with a radius of 7.5cm The circumference of the circle is Cm because. B. Calculate the area of a circle with a diameter of 8.2 inches (round your answer to the nearest hundredth) The area of the circle is. In because.

a. 47.13cm ; b. 52.82inches²

Step-by-step explanation:

A. Circumference of a circle is calculated using the formula = 2πr

where π = 3.142

r = radius = 7.5cm

Circumference = 2πr

= 2 × 3.142 × 7.5

= 47.13cm

Area of a circle =πr²

= 3.142 × 4.1 × 4.1

= 52.82inches²

Note radius = Diameter / 2 = 8.2/2 = 4.1

step-by-step explanation:

let

we know that

the y-intercept is the y-coordinate of the point when the value of x is equal to zero

so

the y-coordinate of the point a is the y-intercept

the answer part a) is

the value of y-intercept is

part b) find the slope m

we know that

the value of the slope is equal to

substitute the values

therefore

the answer part b) is

the value of the slope is equal to

the general answer is

the slope is

the value of y-intercept is

r and t.

both are 64 degrees.