C = 2πr or C = πd
Diameter d = 57 cm
C = πd
C = π*57 = 57π
C ≈ 57 * 3.14159 = 179.07063
Exact circumference is 57π cm or
≈ 179.07 cm.
Answer:
D 8 hours
Step-by-step explanation:
it has to be positive and it is obviously more than 1 hour so it has to be 8 hours by process of elimination.
Answer:
The perimeter is 14 units
<em></em>
Step-by-step explanation:
Given




Required
Determine the perimeter
To do this, we simply calculate the distance between the sides of the rectangle i.e. AB, BC, CD and DA.
Distance (d) is calculated using:

For AB
--- 
--- 

For BC
--- 
--- 

For CD
--- 
--- 

For DA
--- 
--- 

So, the perimeter (P) is:



<em>The perimeter is 14 units</em>
Answer:
Use both methods to calculate the sale price of an item that costs $140 and has a discount of. 40%. 140 x.40 = 56. 140-56 +84. 140x.60 = $84.
Step-by-step explanation:
C
Answer:
idk
Step-by-step explanation: