Area of Circles

Watch this catchy video to remember the difference betweenradius, diameter,circumference andarea! Watch the following video (WHAT DO I DO IF I AM GIVEN DIAMETER?) Label the circle's Circumferenceand Area.Double check spelling with the instructions here, click on the blue dot to label. Circumference Area Match the given measurement with the correct area of the circle. A = πr2or A = π x r x r (HINT: I may give you diameter) Radius = 1 cm 3.14 sq cm Diameter = 4 cm 12.56 sq cm Radius = 40 cm 5024 sq cm Diameter = 18 cm 254.34 sq in What is the area of the pizza? 50.24 sq in 200.96 sq in 25.12 sq in Estimate the area of the top of a round paper plate that has a radius of 6 inches. 18.84 sq in 37.68 sq in 113.046 sq in Determine the area of the coin (HINT: Find radius first...). 283.385 sq mm 1,133.54 sq mm 59.66 sq mm Susan designed a circular pool with a diameter of 30 meters. What is the area of the bottom of the pool (HINT: Find radius first...)? 94.2 sq m 188.4 sq m 706.5 sq m Victor needs to buy mulch for the garden with the dimensions shown in the figure. For how much area does Victor need to buy mulch (HINT: Semicircle)? 94.985 sq yd 47.4925 sq yd 8.635 sq yd