63

The sector is

; there are 360 degrees in a circle.
You use the formula

.
18cm is the radius, and then you square it to get 324.
Multiply 324 by

You get 63
The argument is valid by the law of syllogism.
Answer:
Step-by-step explanation:
Three-dimensional, or perspective view
9514 1404 393
Answer:
(d) h = 2A/b
Step-by-step explanation:
Multiply both sides of the equation by the inverse of the coefficient of h.

when it tells you what R is then you show a number line with -4 less then R