If the area of a semi circle is 135cm squared what is the circumference of the semi circle

I’m assuming that u meant 135cm and NOT 135cm squared because radius is length

First find the circumference of the entire circle

= 2 x pi x radius

= 2 x pi x 135

= 848 cm

Next divide it by two because it is semi circle

=848 / 2

= 424cm

This length is only for the curved part of the semi circle. If u want the full length around it add it to the diameter which is twice the radius

Step-by-step explanation:

.24

step-by-step explanation:

the probability is   .24

the first player had the highest probability of getting a silver marble

the game could be made fair by adding back the marble that was drawn after each draw

x = ±sqrt(10)

step-by-step explanation:

5 - 2x² = -15

subtract 5 from each side

5-5 - 2x² = -15-5

-2x^2   = -20

divide by -2 on each side

-2x^2   /-2= -20/-2

x^2 =10

take the square root on each side

sqrt(x^2 )=±sqrt(10)

x = ±sqrt(10)

check:

5 - 2x² = -15

+sqrt(10)

5 - 2(sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15

-sqrt(10)

5 - 2(-sqrt(10))² = -15

5 -2(10) = -15

5 -20 = -15

-15 = -15