I wonder what shape the window is? It has a radius so I expect a circle but you use the word perimeter which is usually reserved for shapes with sides.
So my guess is you are looking for the circumference of a circular window with radius 20. The circumference is given by (pi)d where d is the diameter. The diameter is twice the radius so 40. We use 3.14 to approximate pi.
That makes the circumference (the distance around the circle) = (40)(3.14)=125.6
Answer:
a²+b²=126
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(12)²=a²+b²+2×9
144=a²+b²+18
a²+b²=144-18=126
Answer:
T = i or -i
Step-by-step explanation:
Consider these steps:
t^2 = -1
t = √-1 or -√-1
t = i or -i
Answer:
80 cents for each tomato
Step-by-step explanation:
Answer:
Step-by-step explanation:
D. all real numbers