Area, Perimeter, Circumference of 2D Shapes

How do you find the CIRCUMFERENCE of a circle?

How do you find the AREA of a circle?

What is the formula for the area of a triangle?

• A = 1/2 bh

• A = bh

• A = s + s + s

Find the area of the triangle

• 48 sq cm

• 24 sq cm

• 30 sq cm 

• 102 cm2

• 110 cm2

• 211 cm2

• 112 cm2

What is the area of the figure?

• 50 squared cm

• 25 squared cm

• 40 squared cm

• 35 squared cm

what is the area of this semicircle ?
d = 8 cm 

• 100.48 cm²

• 80 cm²

• 200.96 cm²

• 25.12 cm²

Determine the radius of the penny

• 59.66 mm

• 9.5 mm

• 38 mm

• 119.32 mm

Area is...

• the measure, in square units, of the exterior of a plane figure.

• the distance around a closed 2-dimensional figure or shape.

• the measure, in square units, of the interior of a plane figure.

• the distance inside a closed 2-dimensional figure or shape.

True or False?

Perimeter is the distance around a closed 2-dimensional figure or shape.

• False

• True