Answer: 66 is the circumference
Step-by-step explanation: Formula of circumference: 2 times pi times R
R is radius and Diameter is 2 times of R. Formula of circumference can also be: pi times R. 22/7 times 21 is 66.
Answer:
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Step-by-step explanation:
Answer:
Option b (1/2,1/3)
Step-by-step explanation:
we have
2x-3y=0 ------> equation A
4x+6y=4 -----> equation B
Solve the system by elimination
Multiply equation A by 2 both sides
2(2x-3y)=2(0)
4x-6y=0 ------> equation C
Adds eqution B and equation C
4x+6y=4
4x-6y=0
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4x+4x=4+0
8x=4
x=1/2
Find the value of y
2x-3y=0
2(1/2)-3y=0
1-3y=0
3y=1
y=1/3
the solution is the point (1/2,1/3)
The graphing is shown below
The ratio of the surface areas of similar solids is equal to the square of their scale factor and that the ratio of their volumes is equal to the cube of their scale factor.