Find the volume of a cone of radius 3.5cm and vertical height 12cm [Take π = 22/7]
3.4cm2
15.5cm2
21.0cm2
42.0cm2
154.0cm2
Correct answer is E
No explanation has been provided for this answer.
With reference to the graph above, which f the following solution sets is represented by ΔOPQ?
y ≥ x, y ≤ 0, y + x ≥ 7
y ≤ x, y ≥ 0, y + x ≤ 7
y ≥ x, y ≥ 0, y + x ≤ 7
y ≤ x, y ≤ 0, y + x ≤ 7
y ≤ x, y ≥ 0, y + x ≥ 7
Correct answer is D
No explanation has been provided for this answer.
In the diagram above, what is the size of angle ACB?
40o
50o
60o
80o
100o
Correct answer is C
< ABC = 80° (alternate angles)
< ACB = 180° - (80° + 40°) = 60°
Simplify \(\frac{9^{-\frac{1}{2}}}{27^{\frac{2}{3}}}\)
1
1/3
1/9
1/18
1/27
Correct answer is E
\(\frac{9^{-\frac{1}{2}}}{27^{\frac{2}{3}}}\)
=\(\frac{3^{-1}}{3^2}\) = \(\frac{1}{27}\)
In the diagram above O is the center of the circle, if ∠PAQ = 75o, what is the value of ∠PBQ?
15o
75o
105o
150o
210o
Correct answer is C
< PBQ = 180° - 75° (opp angles of a cyclic quadrilateral)
= 105°
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