The amount of concrete used in a certain structure is about 9.0 ✕ 10 to the power of 10 kg.

The amount of concrete used in the structure is expressed in scientific notation as:

\[ 9.0 \times 10^{10} \, \text{kg} \]

This means that the structure contains **90 billion kilograms** of concrete (since \(10^{10} = 10,000,000,000\)).

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Here are 5 related questions to expand on this information:

1. How many metric tons of concrete are used if 1 ton = 1,000 kg?
2. What would be the volume of the concrete used if the density of concrete is approximately 2,400 kg/m³?
3. How much weight in pounds is this, if 1 kg = 2.20462 pounds?
4. What would be the total cost of the concrete if 1 kg of concrete costs a certain amount?
5. How long would it take to pour this much concrete at a rate of 1,000 kg per minute?

**Tip**: When converting scientific notation to a standard number, move the decimal point based on the power of ten—positive powers move it to the right.

Explore the problem of determining the mass of concrete in a structure using scientific notation. This solution explains how to convert 9.0 ✕ 10^10 kg into tons, pounds, and explores volume based on the density of concrete. Suitable for high school students in Grades 9-12.

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