Answer:
38.5 cm^2
Step-by-step explanation:
Area(shaded) = Area(large semicircle) - area(2 small equal semicircles)
= Area (large semicircle) - area (small circle)
= π(7)² x 1/2 - π(7/2)²
22/7 x 7 x 7 x 1/2 - 22/7 x 7/2 x 7/2
= 77 - 38.5
= 38.5 cm^2
Only sometimes.
4x + 1 = 2x+3 has a solution.
4x + 1 = 4(x+1) has infinitely many solutions.
(3*9) -28 = 45^ 0 has no solutions.
Therefore, a multi-step equation sometimes has a solution.
