The answer is C. -1+-6=-7, not 7.
First we compute the distance between the center and the given point which is exactly the radius
r =

Now that we know the center and the radius, we can write the equation of a circle with given radius and center:

where (h,k) represent the coordinates of the center (3,7).
We substitute and obtain

The surface area of the new figure is 1470 square meters, if the edge length of the smaller cube is half the edge length of the cube below and edge length of bottom cube is 14 m.
Step-by-step explanation:
The given is,
Length of Bottom (larger) cube is 14 meters
Step:1
Surface area of new figure = (Surface area of smaller cube) +
(Surface area of bottom (larger) cube)....(1)
Step:2
Surface area of Bottom(larger) cube is,
..............................................(2)
From given, a = 14 m
Equation (2) becomes,



Surface area of bottom cube, A = 1176 square meters
Step:3
Surface area of smaller (top) cube is,
....................................................(3)
From given, a = 7 m ( ∵ The edge length of the smaller cube is half the edge length of the cube below)
Equation (2) becomes,



Surface area of bottom cube, A = 294 square meters
Step:4
From equation (1),
Surface area of new figure = 1176 + 294
= 1470
Surface area of new figure = 1470 square meters
Result:
The surface area of the new figure is 1470 square meters, if the edge length of the smaller cube is half the edge length of the cube below and edge length of bottom cube is 14 m.
Answer:
IF YOU WERE ACTAULLY LISTENING IN CLASS????
Step-by-step explanation:
If the equation is wrong, Go through the Equation AGAIN to find out what's wrong.
First:
Write out the Equation:
-6(4-r)=30
Do the rest
Now if you were really listening in class you should know how to do it. once you get the answer, the work that you have shown should be different from The incorrect answer shown. Compare and you should get the answer