splash screen. 1.a 2.b 3.c 4.d five minute check 1 a.34.5 m; 121 m 2 b.34.5 m; 380.1 m 2 c.69.1 m;...
TRANSCRIPT
1. A
2. B
3. C
4. D0% 0%0%0%
A. 34.5 m; 121 m2
B. 34.5 m; 380.1 m2
C. 69.1 m; 190.1 m2
D. 69.1 m; 380.1 m2
Find the circumference and area of the circle. Round to the nearest tenth.
(over Lesson 7-1)
1. A
2. B
3. C
4. D
0% 0%0%0%
A. 16.5 ft; 86.6 ft2
B. 33.0 ft; 86.6 ft2
C. 16.5 ft; 33.0 ft2
D. 33.0 ft; 43.3 ft2
Find the circumference and area of the circle. Round to the nearest tenth.
(over Lesson 7-1)
1. A
2. B
3. C
4. D0% 0%0%0%
A. 157.1 yd; 1963.5 yd2
B. 157 yd; 490.9 yd2
C. 78.5 yd; 490.9 yd2
D. 78.5 yd; 245.3 yd2
Find the circumference and area of the circle. Round to the nearest tenth.
(over Lesson 7-1)
1. A
2. B
3. C
4. D0% 0%0%0%
A. 14.1 in.; 15.9 in2
B. 15.9 in.; 63.6 in2
C. 14.1 in.; 63.6 in2
D. 28.3 in.; 63.6 in2
Find the circumference and area of the circle. Round to the nearest tenth.
(over Lesson 7-1)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
A. 40.8 mi; 265.4 mi2
B. 40.8 mi; 530.9 mi2
C. 81.7 mi; 265.4 mi2
D. 81.7 mi; 530.9 mi2
Find the circumference and area of a circle that has a radius of 13 miles. Round to the nearest tenth.
(over Lesson 7-1)
1. A
2. B
3. C
4. D
A B C D
0% 0%0%0%
A. 23.2 cm2
B. 36.3 cm2
C. 43.0 cm2
D. 82.6 cm2
(over Lesson 7-1)
Find the area of a circle whose diameter is 7 cm. Round to the nearest tenth.
• composite figure
• Find the area of composite figures.
Find the Area of a Composite Figure
Find the area of the composite figure. Round to the nearest tenth.
The figure can be separated into two semicircles and a rectangle.
Find the Area of a Composite Figure
Answer: The area of the figure is about 14.1 + 14.1 + 72 or 100.2 square centimeters.
Area of one semicircle Area of rectangle
1. A
2. B
3. C
4. D
0% 0%0%0%
A. 15.6 ft2
B. 16.2 ft2
C. 16.8 ft2
D. 17.1 ft2
Find the area of the composite figure. Round to the nearest tenth.
GARDENING The dimensions of a flower garden are shown. What is the area of the garden?
The garden can be separated into a rectangle and two congruent triangles.
Answer: The area of the garden is 35 + 5 + 5 or 45 square feet.
Area of rectangle Area of one triangle
1. A
2. B
3. C
4. D
0% 0%0%0%
A. 48 ft2
B. 56 ft2
C. 64 ft2
D. 70 ft2
GARDENING The dimensions of a flower garden are shown. What is the area of the garden?
Find the Area of a Shaded Region
Find the area of the shaded figure. Round to the nearest tenth if necessary.
Find the area of the rectangle and subtract the area of the two triangles.
Find the Area of a Shaded Region
Answer: The area of the shaded region is 192 – 48 or 144 square inches.
Area of rectangle Area of triangles
A = 16 ● 12ℓ = 8 + 8
or 16, w = 6 + 6 or 12
A = 192Simplify.
A = 48
Simplify.
1. A
2. B
3. C
4. D
0% 0%0%0%
A. 92.5 cm2
B. 80.5 cm2
C. 61 cm2
D. 39 cm2
Find the area of the shaded portion of the square. Round to the nearest tenth if necessary.
End of the Lesson
Five-Minute Check (over Lesson 7–2)
Image Bank
Math Tools
Volume of Pyramids, Cones, and Spheres
Making a Pyramid
Surface Area of Prisms
1. A
2. B
3. C
4. D0% 0%0%0%
A. 7,303.2 square miles
B. 94,246.2 square miles
C. 79,639.8 square miles
D. 36,743.8 square miles
Use the solve a simpler problem strategy. Minnesota is known as the "Land of 10,000 Lakes." The total area of Minnesota is 86,943 square miles. Of that, about 8.4% of the area is water. About how many square miles of Minnesota's area is not covered by water? Round your answer to the nearest tenth.
(over Lesson 7-2)
1. A
2. B
3. C
4. D0% 0%0%0%
A. 8 packages of 4; 7 packages of 7
B. 4 packages of 4; 14 packages of 7
C. 5 packages of 4; 8 packages of 7
D. 11 packages of 4; 6 packages of 7
Use the solve a simpler problem strategy. Natasha is giving each of her 27 classmates 3 pieces of chocolate as a treat for her birthday. If the chocolates are sold in packages of 4 and 7, how many of each size package should she buy?
(over Lesson 7-2)
1. A
2. B
3. C
4. D
0% 0%0%0%
A. 845 customers
B. 455 customers
C. 90 customers
D. 65 customers
Use the solve a simpler problem strategy. 650 customers of a restaurant were surveyed. If 30% of the customers voted for a new dessert to be added to the menu, find the number of customers who voted against adding the new dessert to the menu.
(over Lesson 7-2)
1. A
2. B
3. C
4. D0% 0%0%0%
A. 3.5 mm
B. 2.33 mm
C. 1.75 mm
D. 1.50 mm
Use the solve a simpler problem strategy. The length of a $10 roll of a tightly wrapped roll of quarters is 70 mm. About how thick is one quarter?
(over Lesson 7-2)
