Area, Perimeter, and Circumference

Parallelogram

A = bh

Triangle

A = bh/2

Rectangle

A = lw

Square

A = s²

Circle

A = πr²

1200 ft²

Bob would like to paint the four walls in his room. All four walls are the same dimensions. The dimensions are 20 ft by 15 ft. How much square footage does he need to paint to cover all four walls?

46 ft

Cindy wants to fence the dog run in her back yard. The dimensions of the dog run are 15 ft by 8 ft. How much fencing does Cindy need?

50 cm

Find the CIRCUMFERENCE of a circle with a diameter of 16 cm. Round your answer to the nearest whole number.

79 cm²

Find the area of a circle with a diameter of 10 cm. Round your answer to the nearest whole number.

64 cm²

Find the area of a square with side length 8 cm.

60 cm²

Find the area of the Rectangle

26 cm²

Find the area of the trapezoid

35 cm²

Find the area of the triangle

150 ft²

Hank wants to put down grass seed on his trapezoidal shaped yard. How much area would he need to cover if the measurements of his yard are bases 10 ft & 15 ft, and a height of 12 ft?

75 cm

Sue wants to border a circular frame with ribbon. How much ribbon does she need to buy to go around a frame that has a radius of 12 inches? Round to the nearest whole number.