Grade 7 · Geometry & measurement

Circle formulas practice

Circle formulas is a grade 7 math skill aligned to Common Core standard 7.G.B.4: know the formulas for the area and circumference of a circle and use them to solve problems. Below are 8 practice questions with answers and step-by-step explanations, drawn from the 29 circle formulas problems our math games drill.

CCSS 7.G.B.429 questions in the bank

Sample questions

Try 8 for free

Question 1easy

A circle has radius $3$ . Using $\pi = 3$ , what is its area?

$A = \pi r^2 = 3 \times 9 = 27$ .

Question 2easy

A circle has diameter $8$ . Using $\pi = 3$ , what is its circumference?

$C = \pi d = 3 \times 8 = 24$ .

Question 3easy

A circle has radius $1$ . Using $\pi = 3$ , what is its area?

$A = \pi r^2 = 3 \times 1 = 3$ .

Question 4easy

A circle has diameter $6$ . Using $\pi = 3$ , what is its circumference?

$C = \pi d = 3 \times 6 = 18$ .

Question 5easy

A circle has radius $2$ . Using $\pi = 3$ , what is its area?

$A = \pi r^2 = 3 \times 4 = 12$ .

Question 6easy

A circle has radius $1$ . Using $\pi = 3$ , what is its circumference?

$C = 2\pi r = 2 \times 3 \times 1 = 6$ .

Question 7easy

A circle has radius $5$ . Using $\pi = 3$ , what is its area?

$A = \pi r^2 = 3 \times 25 = 75$ .

Question 8easy

A circle has radius $2$ . Using $\pi = 3$ , what is its circumference?

$C = 2\pi r = 2 \times 3 \times 2 = 12$ .

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Math games for Grade 7

Questions like these are served inside our head-to-head math games.

Blaster Gate game

Blaster GateBlast through the wall. First to clear wins.

Blitz Tanks game

Blitz TanksSolve math to load shells. Out-think the battalion. Last math standing wins.

Tests that cover circle formulas:

NAEP SBAC SAT SC READY NC EOG/EOC

More Grade 7 skills:

One-event probability word problems Percent proportion word problems Solving one- and two-step linear equations Angle relationships Combining like terms and distributing Compound probability Integer operations Percent problems All Grade 7 practice →

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