Grade 7 | Unit 3 | Lesson 9: Applying Area of Circles | Practice Problems

A circle with a 12-inch diameter is folded in half and then folded in half again. What is the area of the resulting shape?

• 12 in2

• 18 in2

• 24 in2

Tags

CCSS.7.G.B.4

• 600 in2

• 500 in2

The face of a clock has a circumference of 63 in. What is the area of the face of the clock?

• About 316 in2

• 280 in2

• 350 in2

• 300 in2

• 400 in2

Tags

CCSS.7.G.B.4

Which of these pairs of quantities are proportional to each other? For the quantities that are proportional, what is the constant of proportionality?

• Radius and diameter of a circle

• Radius and circumference of a circle

• Radius and area of a circle

• Diameter and circumference of a circle

• Diameter and area of a circle

Tags

CCSS.7.RP.A.2A

Find the area of this shape in two different ways.

• 10 m2. It is a rectangle of area 12 m2 with a triangle of area 2 m2 missing.

• It is a rectangle of area 6 m2 plus a rectangle of area 2 m2 plus a triangle of area 2 m2.

• It is a circle of area 28 m2 with a rectangular section of area 18 m2 removed.

• It is a square of area 16 m2 removed.

• It is a trapezoid of area 12 m2 minus a triangle of area 2 m2.

Elena and Jada both read at a constant rate, but Elena reads more slowly. For every 4 pages that Elena can read, Jada can read 5. Complete the table and provide the equations for their reading rates.

Tags

CCSS.HSF.LE.B.5