Given:
Circular picture:
diameter = 8 inches
radius = d/2 = 8/2 = 4 inches
Part 1:
Area of a circle = π r²
A = 3.14 * 4²
A = 3.14 * 16 in² ⇒ Choice C.
A = 50.24 in²
Part 2.
Additional 2 inches surrounds the circular picture.
radius = 4 + 2 = 6 inches
A = 3.14 * 6²
A = 3.14 * 36in² ⇒ CHOICE C.
A = 113.04 in²
Answer:
8
Step-by-step explanation:
Add the whole numbers:
5 + 2 = 7
Add the fractions:
2/5 + 3/5 = 5/5 = 1
Add these together:
7 + 1 = 8
Hope this helps!
Answer:
D
Step-by-step explanation:
Using the product to sum formula
• 2cosAcosB = cos(A+B) + cos(A - B)
note that cos(- 3m) = cos 3m, hence
cos5m cos(- 3m)
= cos 5m cos3m ← A = 5m and B = 3m
= 
( 5m + 3m) + cos(5m - 3m) ]
= cos 8m + cos 2m
