kathy has a semi-circle shaped garden that she wants to put a fence around. The diameter of the gardrn is 12 feet. How much fencing does she need?

 30.84 feet

This value is approximate. I used pi = 3.14

Explanation:

Consider a full circle of diameter 12 feet. The circumference is

C = pi*d

C = 3.14*12

C = 37.68

This is the approximate perimeter around the circle. Use more decimal digits of pi to get a more accurate value. You could also use your calculator's stored value of pi.

Since she has a semicircle, aka half circle, this means we cut that value in half to get 37.68/2 = 18.84

The distance around the curved portion of her garden is roughly 18.84 feet

Add on the straight line portion (the diameter) to get 18.84+12 = 30.84 feet

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d