Explanation

To find the perimeter of a square when the area is 2304 m²:

1. Area of a square = side²  

   So, side = √2304 = 48 m

2. Perimeter = 4 × side = 4 × 48 = 192 m

Explanation

840 + 14 + 40 = 894

Explanation

Let the average after 17th innings = x

Then average after 16th innings = (x - 3)

Therefore 16 × (x - 3) + 87 = 17x

Therefore x = 39

Explanation

If you divide a decimal by 10, the decimal point will move one place to the left.

0.7 / 10 = 0.07

Explanation

f the ratio of Cost Price (CP) to Selling Price (SP) is 4:5, it means:

- CP = 4 units  

- SP = 5 units  

Profit = SP − CP = 5 − 4 = 1 unit

Profit % = (Profit / CP) × 100  

= (1 / 4) × 100  

= 25%

Explanation

Explanation

We can write % as 1/100 so.

142.5/100 = 1.425

Explanation

Let the ages of A, B, and C be A, B, and C respectively.

We are given:

1. (A + B)/2 = 30  → A + B = 60  

2. (B + C)/2 = 32  → B + C = 64  

3. (C + A)/2 = 34  → C + A = 68  

Now add all three equations:

(A + B) + (B + C) + (C + A) = 60 + 64 + 68  

⇒ 2A + 2B + 2C = 192  

Divide both sides by 2:  

A + B + C = 96

Now use this to find C:

From (A + B = 60), so:  

C = 96 - 60 = 36

Explanation

To solve:

8 ÷ 0.2

Convert 0.2 to a fraction:  

0.2 = 1/5

So:  

8 ÷ 1/5 = 8 × 5 = 40

Explanation

The largest perfect square between 4 and 50 is:

- 49, because  

49 = 7², and  

the next perfect square (64 = 8²) is greater than 50.