Areas Quiz Set 018 | Maths Aptitude Quiz Questions and Mock Test on Areas Set 18 | mock tests for Bank PO, SSC Exams, SO Clerical Exam, GATE Exam, LIC AO, GIC AO, etc.

**Your Score**
Correct Answers:
Wrong Answers:
Unattempted:

Question 1

The diagonal and one side of a rectangle are 17 m and 15 m. What is the percentage saving of a man who walks along the diagonal instead of the two sides?

$26{2/23}$%.

$28{7/22}$%.

$23{2/25}$%.

$26{19/25}$%.

Soln.
Ans: a

The side = $√{17^2 - 15^2}$ = $√{289 - 225}$ = 8. So the saving = (15 + 8) - 17 = 6 meters. So the %-age saving is $6/23$ × 100 = ${600/23}$, which is same as: $26{2/23}$%.

Solution | Discuss! | Chapters»

Question 2

What is the cost of plastering, @50 paise per square meter, the walls and floor of a 12 m × 2 m. tank that is 22 meters high?

Rs. 320 .

Rs. 322 .

Rs. 318 .

Rs. 324 .

Soln.
Ans: a

The area to be plastered is $(2 × l × h) + (2 × b × h) + (l × b)$ = (2 × 12 × 22) + (2 × 2 × 22) + (12 × 2) = 640 sq. m. The cost = 640 × 0.50 = Rs. 320.

Solution | Discuss! | Chapters»

Question 3

The length and breadth of a rectangle are in the ratio 19 : 7. What is the perimeter if the area is 2128 sq. meters?

208 meters.

210 meters.

206 meters.

212 meters.

Soln.
Ans: a

Let L = 19x and B = 7x. We are given (19x × 7x) = 2128, which gives x = 4. So perimeter = 2 × ((19 × 4) + (7 × 4)) × = 208 meters.

Solution | Discuss! | Chapters»

Question 4

Two concentric circles of radii 11 and 4 cm are drawn on a paper. What is the area of the portion that is inside the outer circle but outside the inner circle?

105π sq. cm.

210π sq. m.

11025π sq. m.

52π sq. m.

Soln.
Ans: a

The required area is difference of the areas of the two circles. π($11^2 - 4^2$) = 105π sq. cm.

Solution | Discuss! | Chapters»