Ch 8 Circles, Circumference, Composite Area

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

Find the area of the shaded region using the formulas.

• (4 x 8) + (3.14 x 1²)

• (3.14 x 1²) - (4 x 8)

• (4 x 8) - (3.14 x 2²)

• (4 x 8) - (3.14 x 1²)

Tags

CCSS.7.G.B.4

Find the area of the shape

Area of Parallelogram = bh

Area of Triangle = ¹/₂bh

Area of Trapezoid = ¹/₂h(b1 +b2)

Area of Circle = πr²

• 44.13 sq cm

• 143.04 sq cm

• 88.26 sq cm

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

6. The figure shows 2 circles inside a trapezoid.
Which procedure should be used to find the area of the shaded region?

• Subtract the perimeter of the trapezoid from the area of both circles.
• Subtract the circumference of both circles from the area of the trapezoid.
• Subtract the area of the trapezoid from the area of both circles.
• Subtract the area of both circles from the area of the trapezoid.

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

9. What is the approximate area of the figure pictured?

• 3.53 cm²
• 7.07 cm²
• 5.30 cm²
• 21.20 cm²

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

10. Which equation can be used to find the area of the composite figure shown?

• A = 8(15) + ½(15×7) + ½(9×8)
• A = 8(15) + 15(7) + 9(8)
• A = 24(8) + ½(15×7)
• A = 15(15) + ½(9×8)

Tags

CCSS.7.G.B.6

what is the area of this semicircle ?

• 100.48cm²
• 80cm²
• 200.96cm²
• none of the above

Tags

CCSS.7.G.B.4

CCSS.7.G.B.6

Find the Perimeter

• 74 in²
• 69 in²
• 82 in²
• 67 in²

Tags

CCSS.3.MD.D.8