Answer:
radius = 5 units
area of a circle = 15.7units²
Step-by-step explanation:
given that the circumference of a circle = 31.4
radius = ?
recall that the formulae for finding the circumference of a circle = 2πr
circumference of a circle = 2 x 3.14 x r
31. 4 = 6.28r
divide both sides by the coefficient of r which is 6.28
31.4/6.28 = 6.28r/6.28
5 = r
radius = 5 units
therefore the radius of the circle whose circumference is 31.4 units is evaluated to be 5units
to find the area of the circle
recall the formula = πr²
area of a circle = 3.14 x 5²
area of a circle = 3.14 x 25
area of a circle = 15.7units²
Answer:
Look in the file, I've drew it there!
Repost this in science. this is physics not math. physics is science.
If you would like to simplify 6 * (-5), you can do this using the following steps:
6 * (-5) = - (6 * 5) = - 30
The correct result would be - 30.
15 $50 dollar bills and 27 $20 dollar bills, a total of 42 bills
