2003
Mathematics
JAMB
On a pie chart, there are four sectors of which three angles are 45°, 90° and 135°. If the smallest sector represents N28.00, how much is the largest sector?
A.
N96.00
B.
N84.00
C.
N48.00
D.
N42.00
Correct Answer: N84.00
Explanation
Let the 4th angle be = x ∴ x + 45 + 90 + 135 = 360 x + 270 = 360 x = 360 - 270 x = 90 ∴ smallest angle = 45° 45° = N28.00 1° = 28.00/45 135° = (28.00/45) * (135/1) = N84.00
Let the 4th angle be = x ∴ x + 45 + 90 + 135 = 360 x + 270 = 360 x = 360 - 270 x = 90 ∴ smallest angle = 45° 45° = N28.00 1° = 28.00/45 135° = (28.00/45) * (135/1) = N84.00THIS WEEK's
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