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15 Cards in this Set
- Front
- Back
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What is the formula for the area of a circle?
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A=πr²
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What is the formula for the circumfrence of a circle?
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C=πD
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What is the approximate value of π?
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3.14
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Find the area of this circle. Use 3.14 for π
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A=πr²
A=π(1.5yd)² A=π(2.25yd²) A=7.065 yd² |
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Find the circumfrence of this circle. Use 3.14 for π
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C=πD
C=π (5cm) C= 15.7 cm |
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Find the area and circumfrence of this circle. Use 3.14 for π
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A=πr²
A=π (2.2cm)² A= π (4.84 cm²) A= 15.1976 cm² C=πD C=π (4.4 cm) C= 13.816 cm |
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Write and solve an equation to find the measure of angle b.
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45 + 60 + b = 180 105 + b = 180 b = 75
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Write and solve an equation to find the measure of angle x.
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60 + 90 + x = 180 150 + x = 180 x = 30
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What is the measure of angle r?
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70
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What is the measure of angle h?
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60
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A triangle has an area of 12 sq ft and a height of 6 ft. what is the length of the base?
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A=1/2bh
12 ft²= (1/2)(b)(6 ft) 12 ft² = 3 ft (b) 4 ft = b |
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What is the surface area of this right triangular prism?
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S=2B+Ph
S=2(8m*7m)+(8m+8m+7m+7m)(3 m) S=2(56 m²)+(30m*3m) S=112 m² + 90 m² S=202 m² |
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You are carrying water to a friend, but only have this rectangular container. How much water will it take to fill the container?
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V=lwh
V=(5 in)(3 in)(7 in) V=105 in³ |
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The surface area of a cube is 78 in². What is the volume of the cube?
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A=6s²
78 in²=6s² 13 in = s² 3.61 in = s V=s³ V=(3.61 in)³ V=46.87 in³ |
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Yellow paint costs 3 cents per square inch. How much will it cost to paint the outside of this box yellow?
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S=2lw+ 2wh+ 2lh
S=2(5in)(9in) + 2(9in)(13in)+2(5in)(13in) S=2(45in²)+2(117in²)+2(65in²) S=90in²+234in²+130in² S=454 in² 454 in² (3⊄/1 in²)= 1362⊄= $13.62 |
