Download presentation
Presentation is loading. Please wait.
Published byMervin Day Modified over 8 years ago
3
$100 $200 $300 $400 $500 $200 $300 $400 $500 Area of Parallelograms Areas of Triangles, trapezoids and Rhombi Geometric Probability Area of regular polygons and circles Area of Irregular Figures
4
Area of Parallelograms for $100 Write the formula for the area of a parallelogram
5
Answer Back Area of a parallelogram: A = bh Where, b = the base of the parallelogram h = the height of the parallelogram
6
Area of Parallelograms for $200 Find the area of the following parallelogram:
7
Answer Back A = bh b = 3.7cm; h = 7.6cm A = 3.7cm*7.6cm A = 28.12 cm 2
8
Area of Parallelograms for $300 Find the area of a parallelogram with base length 10cm, slant height 12 cm and height 8cm
9
Answer A = bh b = 8cm; h = 10cm A = 8cm * 10cm A = 80cm 2 Back
10
Area of Parallelograms for $400 Find x if the area of a parallelogram equals 60, the base = 5 and height = x+7
11
A = bh 60 = 5*(x+7) = 5x + 35 25 = 5x x = 5 Answer Back
12
Area of Parallelograms for $500 Find the area of parallelogram ABCD if A(1,3); B(3,3); C(7,8); D(9,8)
13
Answer Base length = 3-1 = 2 Height = 8-3 = 5 A = bh A = 2*5 A = 10u 2 Back
14
Area of Triangles, Trapezoids and Rhombi for $100 Find the area of the following triangle: 4m 3m 5m
15
Area of a triangle = (1/2)b*h b = 4m; h = 3m A = (1/2)*4m*3m A = 6m 2 Answer Back
16
Area of Triangles, Trapezoids and Rhombi for $200 Find the area of the following Trapezoid:
17
Answer Area = (1/2)h(b 1 + b 2 ) Area = (1/2)(7in)(8in + 12in) Area = 70in 2 Back
18
Area of Triangles, Trapezoids and Rhombi for $300 Find the area of the following Rhombus:
19
Answer Area = (1/2)d 1 *d 2 Area = (1/2)*16*16 Area = 128m 2 Back
20
Area of Triangles, Trapezoids and Rhombi for $400 Find the area of the following figure: 12m 18m 13m 6m
21
Area of a trapezoid = (1/2)h(b 1 +b 2 ) h = 13m; b 1 = 6m; b 2 = 12m A = (1/2)(13)(6+12) A = 9*13 = 117m 2 Answer Back
22
Area of Triangles, Trapezoids and Rhombi for $500 Find the area of a rhombus with vertices at A(3,6); B(3,-2); C(0,2); and D(6,2)
23
Answer Area of a rhombus = (1/2)d 1 *d 2 d 1 = 6 - -2 = 8 d 2 = 6 – 0 = 6 A = (1/2)*6*8 A = (1/2) * 48 A = 24u 2 Back
24
Area of Regular Polygons and Circles for $100 Find the circumference of the following circle. Leave your answer in exact terms
25
Answer Cirfcumference = Π*d C = 5.7Πcm Back
26
Area of Regular Polygons and Circles $200 What is the formula for the area of a regular polygon?
27
Answer Back Area of a regular polygon: A = (1/2)P*a P = perimeter a = apothem
28
Area of Regular Polygons and Circles for $300 Find the area of a circle with diameter 10ft
29
A = Π*r 2 r = (1/2) d = (1/2)*10ft = 5ft A = Π * 5 2 A = 25 Π ft 2 Answer Back
30
Area of Regular Polygons and Circles for $400 Find the area of a regular pentagon that has been inscribed in a circle with radius 8.
31
Answer A = (1/2)P*a P = 5(1.18*8) = 47.2 a = 0.81r = 0.81(8) = 6.4 A = (1/2)*47.2*6.4 = 152.928u 2 See Page 611 Back
32
Area of Regular Polygons and Circles for $500 Find the area of a regular octagon that has been inscribed in a circle with radius 10.
33
Answer A = (1/2)P*a P = 8(0.77*10) = 61.6 a = 0.92r = 0.92(10) = 9.2 A = (1/2)*61.6*9.2 = 283.36u 2 See Page 611 Back
34
Area of Irregular Polygons for $100 How do you find the area of irregular polygons?
35
Answer Break them up into smaller figures of known area. Back
36
Area of Irregular Polygons for $200 Find the area of the following figure:
37
Area = Area of square + area of triangle Area = 13cm * 9cm + (1/2)11*5 Area = 144.5cm 2 Answer Back
38
Area of Irregular Polygons for $300 Find the area of the following figure:
39
Area = 25ft*12.9ft + (1/2)25ft*7.2ft Area = 412.5 ft 2 Answer Back
40
Area of Irregular Polygons for $400 Find the area of the following figure. Assume that the ice cream is a perfect circle of diameter 6cm and the cone is a triangle and there is no overlap in areas: 10cm5cm
41
Answer Area = pi*r 2 + (1/2)Bh Area = pi*9 + (1/2)(5)(10) Area = 53.27cm 2 Back
42
Area of Irregular Polygons for $500 Find the area of the following figure if one side of the square in the middle is 10cm and is the diameter of the semi circle:
43
Answer Area = 10cm * 10cm + 2*((pi)(5) 2 ) Area = 257.08cm 2 Back
44
Geometric Probability for $100 What is the formula for geometric probability? Draw a picture to demonstrate the regions.
45
Answer (Area of B)/(Area of A) Back A B
46
Geometric Probability for $200 What is the area of a sector of a circle if the central angle is 25 degrees and the radius is 5cm?
47
Answer A = (N/360)(pi)r 2 A = (25/360)(pi)(25) A = 5.45cm 2 Back
48
Geometric Probability for $300 What is the area of a sector of a circle if the central angle is 31 degrees and the diameter is 7cm?
49
Answer A = (N/360)(pi)r 2 A = (31/360)(pi)(12.25) A = 3.31cm 2 Back
50
Geometric Probability for $400 Given the following regular trapezoid, find the probability of a chosen point lying in the rectangle in the middle:
51
Answer Back P = Area of rectangle/ Area of trapezoid P = (8*7)/(0.5*7*(14+8)) P = 56/77 = 73%
52
Geometric Probability for $500 Given the following circle with diameter 10, find the probability of a chosen point lying inside the region bounded by arc AB with central angle 115
53
Answer Back P = Area of sector/ Area of circle P = (115/360)(pi*25)/(25pi) P = 32%
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.