2D Geometry Skills Quiz

What is the area of a rectangle with a length of 8 cm and a width of 5 cm?

Answer explanation

To find the area of a rectangle, multiply the length by the width. Area = 8 cm * 5 cm = 40 cm^2. Therefore, the correct answer is 40 cm^2.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Find the area of a triangle with a base of 10 cm and a height of 6 cm.

Answer explanation

The area of a triangle is calculated using the formula: Area = 0.5 * base * height. Substituting the values, Area = 0.5 * 10 cm * 6 cm = 30 cm^2. Therefore, the correct answer is 30 cm^2.

Tags

CCSS.6.G.A.1

• 43.96 cm

• 44 cm

• 22 cm

• 14 cm

Answer explanation

The circumference of a circle is calculated using the formula: Circumference = 2 * π * radius. Substituting the values, Circumference = 2 * 3.14 * 7 = 43.96 cm. Therefore, the correct answer is 43.96 cm.

Tags

CCSS.7.G.B.4

Answer explanation

The area of a circle is calculated using the formula A = πr^2. Since the diameter is 10 cm, the radius (r) is half of that, which is 5 cm. Substituting the values, A = 3.14 * 5^2 = 78.5 cm^2.

Tags

CCSS.7.G.B.4

Calculate the perimeter of a regular hexagon with a side length of 8 cm.

• 48 cm

• 24 cm

• 36 cm

• 64 cm

Answer explanation

To find the perimeter of a regular hexagon, multiply the side length by 6. Therefore, 8 cm * 6 = 48 cm. Hence, the correct answer is 48 cm.

Tags

CCSS.3.MD.D.8

Find the area of a rectangle with dimensions 12 cm by 9 cm.

Answer explanation

To find the area of a rectangle, multiply the length by the width. In this case, 12 cm * 9 cm = 108 cm^2. Therefore, the correct answer is 108 cm^2.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

• 87.92 cm

• 44 cm

• 28 cm

• 88 cm

Answer explanation

The circumference of a circle is calculated using the formula 2 * π * radius. Substituting the values, 2 * 3.14 * 14 = 87.92 cm. Therefore, the correct answer is 87.92 cm.

Tags

CCSS.7.G.B.4

Answer explanation

The area of a circle is calculated using the formula A = πr^2. Substituting the values, A = 3.14 * 5^2 = 78.5 cm^2. Therefore, the correct answer is 78.5 cm^2.

Tags

CCSS.7.G.B.4

Calculate the perimeter of a regular pentagon with a side length of 5 cm.

• 25 cm

• 20 cm

• 15 cm

• 30 cm

Answer explanation

The perimeter of a regular pentagon is calculated by multiplying the side length by 5. Therefore, 5 cm * 5 = 25 cm. Hence, the correct answer is 25 cm.

Tags

CCSS.3.MD.D.8

What is the area of a rectangle with a length of 14 cm and a width of 6 cm?

Answer explanation

To find the area of a rectangle, multiply the length by the width. Area = 14 cm * 6 cm = 84 cm^2. Therefore, the correct answer is 84 cm^2.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3