Answer:
91.68
Step-by-step explanation:
first u find the perimeter of the inner shape...
15+15+12+12=54
than u find the circumstances of the two circles than dividing it is half since it is half a circle
c=2×pi×r
c=2×3.14×6
c=37.68
than add them together
37.68+54= 91.68
The formula for finding the surface area of a sphere is A=4π

. Since we already have the radius, we just plug that into the equation, like so:
A = 4 x 3.14 x 
First, following the rules of PEMDAS, do the exponent, coming out with an answer of 1. Now, multiply 4 x 3.14, which is 12.56. 12.56 x 1 = 12.56.
Rounded to the nearest tenth, your answer is
12.6.
Hope this helps!
Answer:
a=4 n=25
Step-by-step explanation:
5a+5=n
(a+n)-4+25
a+n=29
5(4)+5=n
20+5=25
Answer:
4 hours and 15 minutes
Step-by-step explanation:
Answer:x = -36
Step-by-step explanation:<!>BRAINLIEST APPERICATED<!>