The area of a circle is 201cm² . what is the diameter ?
2 answers:
Answer:
The diameter of the circle is 16
Step-by-step explanation:
Area = you will have to use this formula to find the radius
=
(divide 3.14 into both sides)
cross out 3.14 leaves you with
and divide 201/3.14= 64.01
square root 64.01 which equals 8
Diameter = 2(8) = 16
To check answer use Area formula = 201. 0619298
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Using the information from the question, one can construct two equations:
... (1)
... (2)
by substituting (1) into (2) to find x
\frac{5}{4z} = \frac{1}{4}
⇒ z = 5
By substituting value of z into (1)
⇒ 4 (5) = x
⇒ x = 20
Thus the two numbers are 5 & 20
by substituting (1) into (2) to find x
\frac{5}{4z} = \frac{1}{4}
⇒ z = 5
By substituting value of z into (1)
⇒ 4 (5) = x
⇒ x = 20
Thus the two numbers are 5 & 20