The radius of a wheel is 21 cm. Calculate: (a) the circumference of the wheel. (b) the distance covered by the wheel if it turns
1 answer:
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Answer:
Option (4)
Step-by-step explanation:
Slope a line passing through two points and
is given by,
m =
Since, blue line is passing through two points (-4, -2) and (0, 4),
Slope of the blue line =
=
Similarly, green line is passing through two points (-4, 1) and (0, -2),
Slope of the green line =
=
Since,
Neither these slopes are opposite reciprocals.
Therefore, both the lines are neither parallel nor perpendicular.
Option (4) will be the correct option.
Actually the formula is
(x-a)^2 + (y-b)^2 = r^2
so the center of this circle is (a,b) = (1, -3)
and radius of this circle is 7.
(x-a)^2 + (y-b)^2 = r^2
so the center of this circle is (a,b) = (1, -3)
and radius of this circle is 7.