Perimeter, Circumference and Area Practice

Find the area of a rectangle with length 5 cm and width 3 cm.

• 15 cm²

• 10 cm²

• 8 cm²

• 12 cm²

Answer explanation

To calculate the area of a rectangle, we multiply length x width. And the result will be in units squared.

5cm x 3cm = 15cm²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Calculate the perimeter of a square with side length 7 cm.

• 35 cm

• 14 cm

• 28 cm

• 49 cm

Answer explanation

A square has 4 equal sides, so if we know the measure of one side, we know all four. To calculate the perimeter, we add the measure of all sides together.

7cm + 7cm + 7cm + 7cm = 28cm

Tags

CCSS.4.MD.A.3

Determine the area of a triangle with base 6 cm and height 4 cm.

• 12 cm²

• 24 cm²

• 8 cm²

• 20 cm²

Tags

CCSS.6.G.A.1

Find the perimeter of a rectangle with length 8 cm and width 2 cm.

• 24 cm

• 20 cm

• 16 cm

• 12 cm

Answer explanation

We know that a rectangle has 2 sets of equal sides. So, if we know the measure of one of the long sides and one of the short sides, we know the measure of all four sides.

To calculate the perimeter, we add together the measure of all sides.

8cm + 8cm + 2cm + 2cm = 20cm

Tags

CCSS.4.MD.A.3

Calculate the area of a square with side length 9 cm.

• 36 cm²

• 18 cm²

• 72 cm²

• 81 cm²

Answer explanation

A square has 4 equal sides, so if we know the measure of one side, we know all four. To calculate the area, we multiply length x width.

The answer is expressed in units squared.

9cm x 9cm = 81cm²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Determine the perimeter of a triangle with side lengths 5 cm, 7 cm, and 9 cm.

• 21 cm

• 12 cm

• 15 cm

• 18 cm

Answer explanation

To calculate the perimeter, we add the measure of all sides together.

5cm + 7cm + 9cm = 21cm

Tags

CCSS.3.MD.D.8

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

• 100 cm²

• 36 cm²

• 16 cm²

• 60 cm²

Answer explanation

To calculate the area of a parallelogram, we multiply length (or base) x width.

The answer is expressed in units squared.

10cm x 6cm = 60cm²

Tags

CCSS.6.G.A.1

Calculate the perimeter of a regular hexagon with side length 4 cm.

• 28 cm

• 24 cm

• 20 cm

• 16 cm

Answer explanation

A regular hexagon has 6 equal sides. To calculate the perimeter of a polygon, we add the measure of all sides.

4cm + 4cm + 4cm + 4cm + 4cm + 4cm = 24cm

Tags

CCSS.3.MD.D.8

Determine the area of a circle with radius 5 cm. (Use π = 3.14)

• 50 cm²

• 31.4 cm²

• 78.5 cm²

• 15.7 cm²

Tags

CCSS.7.G.B.4

Find the circumference of a circle with diameter 12 cm. (Use π = 3.14)

• 24 cm

• 37.68 cm

• 12 cm

• 48 cm

Tags

CCSS.7.G.B.4