Question 15 of 43intermediate🔧 ApplyNumerical2 marks

Find out how many coins should be stacked to match the height of the Statue of Unity. Assume each coin is 1 mm thick.

Correct Answer

Given: Height of Statue of Unity = 180 metres Each coin thickness = 1 mm

Conversion: 180 m = 180×100180 \times 100 cm = 18000 cm 18000 cm = 18000×1018000 \times 10 mm = 1,80,000 mm

Calculation: Number of coins = 1,80,000 mm ÷ 1 mm = 1,80,000 coins

Answer: 1,80,000 coins

Exercise: Figure it Out (Section 6) | Q: 11 | (Chapter: Page 21)
For More Understanding

Explanation

The chapter mentions that the Statue of Unity is about 180 metres tall. Converting to millimetres: 180 m = 180×100180 \times 100 cm = 180×100180 \times 100 × 10 mm = 1,80,000 mm. Since each coin is 1 mm thick, we need 1,80,000 coins.

Solution Steps

  1. Step 1: Height of Statue of Unity = 180 metres

  2. Step 2: Convert to millimetres: 180 m = 180×100180 \times 100 cm = 18000 cm = 18000×1018000 \times 10 mm = 1,80,000 mm

  3. Step 3: Each coin is 1 mm thick

  4. Step 4: Number of coins needed = 1,80,000 mm ÷ 1 mm = 1,80,000 coins

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