GIC EDAY UNIT10 DAY02 Circumference and Area

What is the formula for area of a circle?

• A = π×r²
• A = 2×π×r

Tags

CCSS.7.G.B.4

What is the formula for Circumference?

• C = π×r²
• C = 2×π×r

Tags

CCSS.7.G.B.4

What is the radius of this circle?

• 18 in
• 10 in
• 9 in
• 8 in

Tags

CCSS.7.G.B.4

What is the diameter of this circle?

• 3.5 m
• 3 m
• 5 m
• 7 m

Tags

CCSS.7.G.B.4

The homeowners association wants to enclose the playground in a fence. How much fencing will they need to purchase? Is this question finding the area or the circumference?

• area
• circumference
• neither

Tags

CCSS.7.G.B.4

Mrs. Apple just bought a new dinning room table. She needs to make a table cloth for decoration. What amount of fabric should she buy if the table has a diameter of 5 feet? Choose the equation that would best help solve this problem.

• C = π5
• C = (2)(π)(2.5)
• A = π5²
• A = π2.5²

Tags

CCSS.7.G.B.4

Your Geometry teacher rents a fast car for the weekend. Her friend, a Physics teacher, uses a stopwatch to time how long it takes your teacher to make one complete revolution about the track. Is this question circumference or area?

• Circumference
• Area

Tags

CCSS.7.G.B.4

A Circle has a radius of 4.  What is the circumference of the circle? (Best Choice)

• 4π or about 12.56
• 16π or about 50.24
• 2π or about 6.28
• 8π or about 25.12

Tags

CCSS.7.G.B.4

A Circle has a radius of 4.  What is the area of the circle? (Best Choice) (note: units are squared)

• 4π or about 12.56
• 16π or about 50.24
• 2π or about 6.28
• 8π or about 25.12

Tags

CCSS.7.G.B.4

A Circle has a radius of 6 inches.  What is the circumference of the circle? (Best Choice)

• 3π or about 9.42 in
• 6π or about 18.84 in
• 12π or about 37.68 in
• 36π or about 113.04 in 

Tags

CCSS.7.G.B.4