Explanation

Given that the radius of a circle is increased to twice its original length

We have to find the increase in the area of the circle

Area of circle = πr²

Where r is the radius of the circle

Now, r = 2r

Area of circle = π(2r)²

= 4πr²

Last updated by NA on 27 April 2026

Explanation

A quadrilateral is a square if and only if it is both a rhombus and a rectangle (i.e., four equal sides and four equal angles)

Additional information

•  If those four equal sides also have four right angles (90), it is specifically called a Square
• A triangle that has no equal sides and no equal angles is known as a Scalene Triangle
• If two sides of a triangle are of equal length, then it is called. Isosceles triangle

Explanation

50% of 75% of 200:

• 75% of 200 = 150
• 50% of 150 = 75

Explanation

Explanation

Explanation

10 × 13 = 130

Last question by NA on 26 April 2026

Explanation

• π (pi) is approximately 3.14159.
• The value of Pi (π) is the ratio of the circumference of a circle to its diameter.
• The value of π  (pi) is an irrational number
• Meaning it is a decimal that never ends and never settles into a repeating pattern

Last updated by NA on 25-April-2026

Explanation

Step 1: Find the gap

From 4th to 24th:

$$24-4=20\text{ days}$$

Step 2: Divide by 7 (weekly cycle)

$$20÷7=2\text{ weeks }+6\text{ days}$$

So we move 6 days forward from Monday.

Step 3: Count 6 days from Monday

• Monday → Tuesday (1)
• Wednesday (2)
• Thursday (3)
• Friday (4)
• Saturday (5)
• Sunday (6)

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Last updated by NA on 25-April-2026

Explanation

Seven months in a year have 31 days:

1. January
2. March
3. May
4. July
5. August
6. October
7. December

Last updated by NA on 25-April-2026

Explanation

We send children to school to educate, train, and develop their skills and personality (this is called grooming).

Last updated by NA on 25-April-2026