Answer:
314 m²
Step-by-step explanation:
the surface area of a sphere (As) is
As = 4×pi×r²
our radius r (half of the diameter) here is 5m.
As = 4×3.14×5² = 4×3.14×25 = 100×3.14 = 314 m²
Answer:
b = 15
Step-by-step explanation:
Solve for b:

Cross multiply:

Step-by-step explanation:





so the answer is 40
The correct answer is
d=50t
Where; d is the distance covered in miles
t is the time taken in hours