Math 7 Homework...perimeter and circumference

Farmer Bob's son built a track to walk his pet pig.  The track goes around the pig pen.  The pig pen is 15 feet long and 21 feet wide.  If the pig walks all the way around the track, how many feet did he walk?

• 72 feet
• 36 feet
• 36 square feet

Tags

CCSS.4.MD.A.2

What is the perimeter of this rectangle?

• 21 units
• 12 units
• 3 units
• None of the above.

Find the perimeter of a square that has a length of 6 in.

• 12 in.
• 24 in.
• 20 in.
• 16 in.

Tags

CCSS.4.MD.A.3

What is the perimeter of a rectangle with a length of 8.6cm and a width of 4.23 cm?

• 12.83 cm

• 25.66 cm

• 36.38 cm

Tags

CCSS.4.MD.A.3

What is the perimeter of an equilateral triangle that has side measurements of 8 ³/₄ in.

• 24.5 in.

• 64 ³/₄ in.

• 26 ¹/₄ in.

Tags

CCSS.3.MD.D.8

To find the perimeter of a square you...

• multiply its length x width

• add the length and width

• multiply the side x 4

Tags

CCSS.4.MD.A.3

A formula for circumference of a circle is...

• r⫪

• d⫪

• 2⫪d

Tags

CCSS.7.G.B.4

If my diameter is 19 inches, what is my radius?

• 38 inches
• 9.5 inches
• 59.66 inches
• 119.32 inches

Tags

CCSS.7.G.B.4

If my radius is 10ft, what is my diameter?

• 20ft
• 5ft
• 31.4ft
• 62.8ft

Tags

CCSS.7.G.B.4

what is the circumference of this circle ?

• 3.14 cm 
• 37.68 cm
• 24 cm
• 68.4 cm

Tags

CCSS.7.G.B.4