Answer:
5 units
Step-by-step explanation:
Radius=diameter/2
Where diameter=10
=>Radius=10/2
=>Radius=5 units
Radius = diameter/2
Given
Diameter = 10 units
Radius = 10/2
= 5 units
√250 - √490
= 5√10 - 7√10
= -2√10
So this is multiplication
24.5 times 20 in dollars is $4.90 if we round it than it will be 5 dollars