1,661.
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°
1,662.
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
1,663.
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.
1,664.
A.
222km
B.
445km
C.
890km
D.
5005km
E.
10010km
Correct answer is B
θ360
* 2πr = Rcos4o4360
* 400411
= 445km 1,665.
A.
(5y - a) (y + 3a)
B.
(5y + a) (y - 3a)
C.
5y2 + a (2y - 3a)
D.
(y - a) (5y + 3a)
E.
(y + a) (5y - 3a)
Correct answer is E
5y 2 + 5ay - 3ay - 3a 2
5y(y + a) - 3a(y + a)
(y + a) (5y - 3a)
WAEC Subjects
Aptitude Tests