Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

A rectangular wire 22 × 10 is re-aligned into a rectangle 11 × 30. What is the percentage increase in area?

### Question 2

What is the area of the largest square that can be drawn inside a circle of radius 19 m?

### Question 3

A gun is fired towards a circular board consisting of two concentric circles of radii 19 and 13 cm. If each bullet is able to hit the board, what is the probability that it will strike the ring, i.e., the area between the inner and outer circles?

**A**

${192/361}$.

**B**

${32/61}$.

**C**

1/2.

**D**

${24/47}$.

**Soln.**

**Ans: a**

The area of the ring is equal to the difference of the areas of the two circles. π($19^2 - 13^2$) = 192π sq. cm. The total area is π × 19^{2} = 361π. The probability of hitting the ring is ${192π}/{361π}$ = ${192/361}$.

### Question 4

What is the cost of plastering, @50 paise per square meter, the walls and floor of a 8 m × 2 m. tank that is 36 meters high?

### Question 5

The diagonal and one side of a rectangle are 10 m and 8 m. What is the perimeter of the rectangle?

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This Blog Post/Article "Areas Quiz Set 014" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-04-07.