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What do we mean by the perimeter of a shape?

Write an expression for the perimeter p of a square with length l cm.

A

p = l

B

p = l + l

C

p = l + l + l

D

p = l + l + l + l

Calculate the perimeter of a square with side length 3cm.

A

12cm

B

6cm

C

81cm

D

27cm

Calculate the length of the side of a square whose perimeter is 20cm.

A

10cm

B

5cm

C

4cm

D

20cm

Write an expression for the perimeter p of a rectangle with length l cm and height h cm.

A

p = l + h

B

p = 2l + h

C

p = l + 2h

D

p = 2l + 2h

Calculate the perimeter of a rectangle with side length 7cm and height 3cm.

A

14cm

B

9cm

C

10cm

D

20cm

Calculate the length of a rectangle with height 3cm if the perimeter is 16cm.

A

3cm

B

4cm

C

5cm

D

6cm

Calculate the height of a rectangle with length 4cm if the perimeter is 12cm.

A

2cm

B

3cm

C

4cm

D

5cm

A

2p + 2q

B

4p + 2q

C

2p + 1q

D

6p + 6q

A

3p

B

4p

C

12p

D

16p

A

4p

B

6q

C

8q

D

12q