Exercise 13 – 2:- a)344 cm^2
b)277,82 cm^2
c)87,96 cm^2
d)471,24 cm^2
e) 270
f)532,84 cm^2- a)24 L
b)22 L
Exercise 13 – 3:1.420 cm^3
2.500 cm^33.785,4 cm^3
4.32,06- 1056
6.552,92
Exercise 13 – 4: - a)282,7cm^2
b)45,6 cm^2
c)180 cm^2
d)1256,6 cm^2
2.175,93
3.804,25 square units4.189 square unitsExercise 13 – 5:1.2144,66 units^3
2.29,32 units^3
3.170,67 units^3- a)314,16 cm^3
b)52,0 cm^3
c)144 cm^3
d)4188,8 cm^3
5.surface area is 393 cm^2 and the volume
is 507 cm^3- a)91,39 cm^2
b)29,39 cm^3
7.surface area is 190 cm^2 and the volume
is 175 cm^3
Exercise 13 – 6:1.^19
2. 4
3.doubles
4. a)increaases by a factor of 9
b)increaases by a factor of 27
5.64 times
6.volume is 31 552 cm^3 and the surface area is 96 112 cm^2.Exercise 13 – 7:- a)75 cm^2
b)153,94 mm^2
c)252,76 cm^2 - a) 15 y^2 10 y
b)^15 y
2
2 ^5 y - 420
- 210
5.640,88 - 360
- 300
8.1847,26
9.615,75
10.88 square units
11.103,67 square units
12.113,1 units^3
13.183,26 units^3
14.130,67 units cubed - a)Acone = 126,67 cm^2 Asquare pyramid =
437,26 cm^2 Ahalf sphere=150,80 cm^2.
b)Vcone=94,25 cm^3 Vsquare pyramid=900 cm^3 Vhalf sphere=
134,04 cm^3 - 161
17.^19
18.^18 - a)Acylinder = 351,9 cm^2 Atriangular prism =
384 cm^2 Arectangular prism=76 cm^2.
b)Vcylinder = 502,7 cm^3 Vtriangular prism =
240 cm^3 Vrectangular prism=40 cm^3
c) Acylinder = 3166,7 cm^2 Atriangular prism =
3456 cm^2 Arectangular prism=684 cm^2
d)Vcylinder = 13 571,9 cm^3 Vtriangular prism =
6480 cm^3 Vrectangular prism=1080 cm^3- a) 460,64 cm^2
b)588 cm^3 - 30 159,52 cm^2 and 301 592,88 cm^3
- a) 3665,19 cm^3 and 1194,67 cm^2
b)2148,85 m^3 and 867,08 m^2
c) 600 ft^3 and 600,37 ft^2 - Yes
- a) 90 cm
b)261,5 l - a) 47 123,89 cm^3 and 1570,80 cm^2
b)92,38 and 180,04
c) 1200 and 886 - a) 2412,743
b)645,07 cm^3 - b)28,57 units^2
c) 285,664 units^3 - b)74,626 cm^3
- a) 4 a^2
b)612,00538 feet
c) 1,620
d)91 661 532,5 feet^3 and 1 551 425,432 feet^2
14 Probability
Exercise 14 – 1:Solutions 513