1,671.
A.
33o
B.
40o
C.
90o
D.
180o
E.
270o
Correct answer is D
Circumference = 2πr
2 x 22/7 x 3.5 ≅ 22m
22m = 360o
11m = 360/22 x 11 = 180o
1,672.
A.
67o
B.
100o
C.
113o
D.
126o
E.
134o
Correct answer is E
From the diagram, < LMN = 180° - (74° + 39°) (sum of angle in a triangle)
= 67°
< LON = 2 x 67° (angle subtended at the centre is twice the angle at the circumference)
= 134°
1,673.
slant height t = 14cm
curved surface area of cone = πrl
=> 3.142 x 3.5 x 14 = 153.95
A.
22cm2
B.
38.5cm2
C.
77cm2
D.
154cm2
E.
308cm2
Correct answer is D
Length of arc =
θ360
* 2πr=> r =
90360
* 144
= 3.5 slant height t = 14cm
curved surface area of cone = πrl
=> 3.142 x 3.5 x 14 = 153.95
1,674.
Which of the regions P, Q, R, S and T satisfies the following 0 < y < 1, y < x + 2, x < 0
A.
P
B.
Q
C.
R
D.
S
E.
T
Correct answer is E
No explanation has been provided for this answer.
1,675.
A.
222km
B.
445km
C.
890km
D.
5005km
E.
10010km
Correct answer is B
θ360
* 2πr = Rcos4o4360
* 400411
= 445kmWAEC Subjects
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