True: Spheres have diameters and radii. The diameter of a sphere is found by multiplying the radii times 2.
Answer:
The length ot rectangle is 3 units.
Step-by-step explanation:
The formula for perimeter is P = 2l + 2w and the area is A = l×w. Assuming that the perimeter and area have the same values so you have to compare it :
Answer:
x = -1 ,y = -5
Step-by-step explanation:
--> -2x + 3y +3x-3y = 12-13
--> x= -1
then
--> -2(-1) +3y =-13
--> 2+3y= -13
--> 3y = -15
--> y =-15/3
--> y = -5
I tnjnk is b I'm not sure
Answer:
138π m²
Step-by-step explanation:
The following data were obtained from the question:
Diameter (d) = 6 m
Height (h) = 20 m
Surface Area (SA) =?
Next, we shall determine the radius. This can be obtained as follow:
Diameter (d) = 6 m
Radius (r) =?
r = d/2
r = 6/2
r = 3 m
Finally, we shall determine the surface area of the cylinder. This can be obtained as follow:
Radius (r) = 3 m
Height (h) = 20 m
Surface Area (SA) =?
SA = 2πrh + 2πr²
SA = 2πr (h + r)
SA = 2 × π × 3 (20 + 3)
SA = 2 × π × 3 × 23
SA = 138π m²
Thus, the surface area is 138π m².
