Answer:
2(s + 5) = 2s + 10, not 2s - 10
2s - 10 = 2s + 10
Answer:
388
Step-by-step explanation:
We need to find the area of the semicircle and parallelogram separately and then combine.
The formula for the area of a semicircle is 1/2(pi*r^2)
r = 12. 12^2 = 144
1/2(pi*144) = 226..1946711 which we can just round to 226
The formula for the area of a parallelogram is bh
b = 18, h = 9. 18*9 = 162.
226+162 = 388
Answer:
The dolphin's final depth was -25 feet.
Step-by-step explanation:
