The error that occurred is a systematic error.
<h3>
What is random error?</h3>
Random error is a type of error that causes one measurement to differ slightly from the next.
<h3>
What is systematic error?</h3>
Systematic error is a type of error that affects measurements in the same amount or by the same proportion, provided that readings are taken in the same way.
The three measurements 548.5 g, 548.9 g, and 548.7 g differ slightly but in the same amount and proportion.
Therefore, a systematic error occurred during the determination of the mass of the substance because the readings were taken in the same way and the measurement differ in the same amount.
Read more about error in measurement here:
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im gonna say d not sure, 10% is 5 dollars off tho
We know that
area of a circle=pi*r²
for r=2 km
area of a circle=pi*2²-----> 12.56 km²
if 360° (full circle) has an area of---------> 12.56 km²
45°---------------------------------> x
x=45*12.56/360-----> x=1.57 km²
the answer is
1.57 km²
Answer:
(B) Segments MA and MB
Step-by-step explanation:
The tangent to the circle at a point is perpendicular to the radius of the circle drawn to the point of tangency.
Tangent at a point is unique.
Since there can be no two tangents at a point on circle, the options (b) and (c) are ruled out.
Now, if OA is perpendicular to MA, MA is the tangent else if OA is perpendicular to PA, PA is the tangent. Same is the case with point B.
Tangents from the same external point has same length.
MA = MB since they are the radii of the same circle with center M.
Hence, MA and MB meet all the requirements of the tangents.
