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WAEC Mathematics Past Questions & Answers - Page 239

1,191.

P varies inversely as Q. The table above shows the value of Q for some selected values of P
What is the missing value of Q in the table?

A.

4

B.

9

C.

15

D.

16

E.

144

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

1,192.

In the diagram above, |PQ| = |PR| = |RS| and ∠RSP = 35^o. Find ∠QPR

A.

70^o

B.

50^o

C.

45^o

D.

40^o

E.

35^o

View answer & explanation

Correct answer is D

No explanation has been provided for this answer.

1,193.

Find the curved surface area of a cone of radius 3cm and slant height 7cm ( $take \pi = \frac{22}{7}$

A.

$22cm^2$

B.

$44cm^2$

C.

$66cm^2$

D.

$132cm^2$

E.

$198cm^2$

View answer & explanation

Correct answer is C

Curved surface area of a cone $= \pi rt\\ \frac{22}{7}\times 3\times 7 = 66cm^2$

1,194.

The diagonal and one side of a square are x and y units respectively. Find an expression for y in terms of x

A.

$y=\frac{x}{2}$

B.

$y\frac{x}{\sqrt{2}}$

C.

$y=\sqrt{x}$

D.

$y=\sqrt{\frac{x}{2}}$

View answer & explanation

Correct answer is B

diagonal of a square(x) = y√2

y in terms of x →

y = $\frac{x}{√2}$

1,195.

Find the angle x in the diagram above

A.

310^o

B.

230^o

C.

190^o

D.

130^o

E.

100^o

View answer & explanation

Correct answer is E

No explanation has been provided for this answer.

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