Area of composite circles

What is the area of semi-circle with a radius of 10 cm?

• 39.3 sq. cm

• 157 sq. cm

• 62.8 sq. cm

• 31.4 sq cm

Tags

CCSS.7.G.B.4

Find the composite area.

• 72.12

• 146.24

• 96

• 121.12

Tags

CCSS.7.G.B.6

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.6

CCSS.7.G.B.4

The Cruz family is buying a custom-made cover for their swimming pool, shown above. The cover costs $2.95 per square foot. How much will the cover cost? Round to the nearest cent.

• $422.10
• $551.63
• $1,627.29
• $1,106.25

Tags

CCSS.7.G.B.6

CCSS.7.EE.B.3

1. Mason needs to purchase new glass for the window pictured here.  About how many square feet of glass will he need to purchase? 

• 20 ft²
• 13 ft²
• 26 ft²
• 41 ft²

Tags

CCSS.7.G.B.6

2. The figure shows a circle inside a triangle.  Which equation could be used to find the area of the shaded region?

• A = ½bh - 2πr
• A = πr² - ½bh
• A = ½bh - πd
• A = ½bh - πr²

Tags

CCSS.7.G.B.6

CCSS.7.G.B.4

CCSS.7.EE.B.4

3. At a restaurant, a waiter pushed 4 identical square tables together as shown in the diagram. The width of each table is 5 feet.  Which of the following methods could the waiter use to   determine the total serving area created by the 4 square tables?

• Multiply 5 by 5, then multiply the product by 4.
• Multiply 5 by 5, then multiply the product by 5.
• Add 4 plus 4, then multiply the sum by 5.
• Multiply 4 by 5, then add 4 to the product.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

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.3.MD.C.7D

7. Which of the following is closest to the area of the figure shown?

• 420 cm²
• 521 cm²
• 320 cm²
• 1,124 cm²

Tags

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.6

CCSS.7.G.B.4