Answer: 
Step-by-step explanation:
If you meant to solve for "z", then refer to the attachment below.
C, since the radius is 10 multiply by 2 and 100 x 3.14 is 314
The key word here is *square* in "square flower garden".
So we need to find the area of the flower garden, and subtract it from the overall area of the yard. The remainder will be how much grass covers the yard.
Area of the Square flower garden:
7.5 * 7.5 = 56.25
Area of the Entire yard:
25 * 18 = 450
450 - 56.25 = 393.75 square feet of grass
First you do “Parenthesis”. So add to get 11. Next you do “Multiplication”. So multiply 7 and 11 to get 77. Last you do “Subtraction”. Final answer is 73.
Answer:
x²+4=0
Step-by-step explanation:
x²=-4
√x² = √-4
x = 2i
x is an imaginary number
