RIT 250 Map Math Quiz

Which of the following is the correct area of a circle with a radius of 5 units? (Remember, A = πr^2)

• 10.21 square units

• 78.54 square units

• 15.7 square units

• 25.12 square units

Answer explanation

The correct area of a circle with a radius of 5 units is 78.54 square units, as calculated using the formula A = πr^2.

Tags

CCSS.HSG.GMD.A.1

James, David, and Mia are planning to create a circular garden with a diameter of 10 units. What will be the area of the garden? (Use the formula A = πr^2)

• 50.24 square units

• 100.48 square units

• 78.54 square units

• 25.12 square units

Answer explanation

The area of a circular garden with a diameter of 10 units can be calculated using the formula A = πr^2. The correct answer choice is 78.54 square units.

Tags

CCSS.HSG.GMD.A.1

What happens to the area of a rectangle when its length is doubled but the width remains the same?

• The area of the rectangle triples

• The area of the rectangle is halved

• The area of the rectangle remains the same

• The area of the rectangle doubles

Answer explanation

When the length of a rectangle is doubled while the width remains the same, the area of the rectangle doubles. This is because the area of a rectangle is calculated by multiplying its length and width.

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.7

What happens to the area of a rectangle when both the length and width are halved?

• The area remains the same

• The area is reduced to half

• The area is reduced to one-fourth of the original area.

• The area is doubled

Answer explanation

When both the length and width of a rectangle are halved, the area is reduced to one-fourth of the original area.

Tags

CCSS.6.G.A.1

When William triples the base and Daniel halves the height of a triangle, how does the area change?

• Quadruples

• Doubles

• Remains the same

• Becomes zero

Answer explanation

When William triples the base and Daniel halves the height of a triangle, the area remains the same. The area of a triangle is calculated using the formula: (base * height) / 2. Tripling the base and halving the height cancels each other out, resulting in the same area.

Tags

CCSS.HSG.SRT.D.9

What happens to the area of a triangle when both the base and height are doubled?

• It becomes twice the original area

• It becomes half the original area

• It becomes three times the original area

• It becomes four times the original area

Answer explanation

When both the base and height of a triangle are doubled, the area becomes four times the original area.

Tags

CCSS.HSG.SRT.D.9

When the radius of a circle is doubled, what happens to its area?

• It becomes four times larger

• It becomes three times larger

• It becomes twice as large

• It remains the same size

Answer explanation

When the radius of a circle is doubled, its area becomes four times larger.

Tags

CCSS.HSG.GMD.A.1

What happens to the area of a circle when its diameter is halved?

• The area of the circle is reduced to one-fourth of its original area.

• The area of the circle remains the same

• The area of the circle is doubled

• The area of the circle is reduced to half of its original area

Answer explanation

When the diameter of a circle is halved, its area is reduced to one-fourth of its original area.

Tags

CCSS.HSG.GMD.A.1

Emma, James, and Luna are planning to make a circular garden. What is the area of the garden if the radius is 7 units?

• 49 units squared

• 21 units squared

• 154 units squared

• 98 units squared

Answer explanation

The area of a circular garden is calculated using the formula A = πr^2. With a radius of 7 units, the area is 154 units squared. Therefore, the correct answer is 154 units squared.

Tags

CCSS.HSG.GMD.A.1

Find the area of a circle with a diameter of 12 units.

• 90.48 square units

• 113.04 square units

• 56.52 square units

• 24 square units

Answer explanation

The area of a circle can be found using the formula A = πr^2. Since the diameter is given, we can find the radius by dividing it by 2. The correct choice is 113.04 square units because it is the result of calculating the area using the formula.

Tags

CCSS.HSG.GMD.A.1