Arielle's Math Practice Day 5

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated using the formula: A = πr², where r is the radius.

Front

How do you find the radius of a circle if you know the diameter?

Back

The radius is half of the diameter. So, r = diameter / 2.

Front

What is the area of a circular rug with a diameter of 8 feet?

Back

The radius is 4 feet. The area is A = π(4)² ≈ 50.27 square feet, rounded to 50 square feet.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form, making it easier to understand or calculate.

Front

Back

The value is -4.

Front

What is an exponent?

Back

An exponent indicates how many times a number (the base) is multiplied by itself.

Front

Back

Front

What is the inequality sign that makes the statement -7 _____ -9 true?

Back

The correct sign is >, so -7 > -9.

Front

What is the average temperature of a planet?

Back

The average temperature is the mean temperature measured over a specific period.

Front

Which planet has the coldest average surface temperature?

Back

Neptune has the coldest average surface temperature among the given options.