It’s simple. The volume of a sphere is V=4/3πr^3.. so you will convert the mm to m okay?? 10mm=1cm .. so do your conversion from here then when you get the radius then you will substitute it into the volume where r is the radius.. so for the first one l changed mm to cm so.. radius is 4cm then l substitute it into the formula so l got 270 after rounding it to the nearest tenth.. pi=22/7 bear in mind. So do the same for the other one
Answer:
2 2/3
Step-by-step explanation:
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don't be afraid to ask questions
The answer is 7/8
Hope the helps:)
Answer:
Perimeter of the square field is 600 meters.
Step-by-step explanation:
Given:
Area of a square field = 2.25 hectares
1 hectare = 10000 m²
∴2.25 hectares =
m²
Now, let each side length of the square field be 
meters.
∴ Area = 
⇒ 
⇒ 
m
Now, perimeter of a square is given as, 
.
Here, 
m.
∴ 
m
Hence, the perimeter of the square field is 600 meters.
9514 1404 393
Answer:
x = ±3√2i
Step-by-step explanation:
Add -18 to both sides of the equation:
x^2 = -18
Take the square root of both sides:
x = ±√(-18)
Remember that 18=9·2 = (3^2)·2 and √-1 = i. Simplify.
x = ±(√(3^2))·(√2)·(√-1)
x = ±3√2i
