Explanation

Industry: Aviation.

Founded: 1996.

Headquarters: Opfikon, Zürich, Switzerland.

Number of locations: 296 airports.

Explanation

Initially, the total height of the 14 boys = Average height x Number of boys = 5.3 x 14 = 74.2 feet

After the new boy joined, the total height of the 15 boys = New average height x Total number of boys = 5.25 x 15 = 78.75 feet

Since the total height increased by the height of the new boy, we can set up the equation:

74.2 + New boy's height = 78.75

Subtract 74.2 from both sides:

New boy's height = 78.75 - 74.2

New boy's height = 4.55 feet

So, the new boy's height is 4.55 feet.

Explanation

An "above the fold" front page refers to the top half of the front page of a newspaper.

This term is used because it is the most visible part when the newspaper is folded and displayed.

Explanation

The correct indirect speech conversion is:

"He told me that he had often told me not to play with fire."

This conversion accurately changes the present perfect ("have often told") to the past perfect ("had often told") in reported speech.

Explanation

Pakistan is the most successful national field hockey team in the Hockey World Cup.

Pakistanis the four-time champion: 

1. 1971
2. 1978
3. 1982
4. 1994

Explanation

Water vapor is the gaseous form of water.

It present in the atmosphere as an invisible gas.

It is part of the water cycle.

Explanation

The correct indirect speech is "Ali asked how long it would take to travel from Germany to South Africa."

Here, "will" changes to "would" in reported speech to match the past tense of the reporting verb "asked."

Explanation

The area of a circle is given by the formula:

A = πr^2

where A is the area and r is the radius.

Given the area is 98.56 cm^2, we can set up the equation:

98.56 = πr^2

Now, divide both sides by π (approximately 3.14):

r^2 = 98.56 / 3.14

r^2 = 31.36

r = √31.36

r ≈ 5.6

Now that we have the radius, we can find the circumference using the formula:

C = 2πr

C ≈ 2 × 3.14 × 5.6

C ≈ 35.2

So, the circumference is approximately 35.2 cm.

Explanation

The correct indirect speech is "I asked him why he was working so hard."

The question structure changes to a statement format, and "are" changes to "was" to maintain tense consistency in reported speech.

Explanation

The unit of gas billing is typically the British Thermal Unit (BTU), which measures energy.

It quantifies the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.