Simplify the following ratios:
1. 1m^3 : 6000 cm^3
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2. The lengths of the triangle are in the ratio 2: 4 : 5.
(a) If the shortest side is 8cm long , find the lengths of the other sides.
(b) If their total length is 66cm , find the length of each side .
maths f,1-f,2
2007-07-30 4:13 am
回答 (2)
2007-07-30 4:36 am
✔ 最佳答案
1)1m^3:6000cm^3
=(100cm)^3:6000cm^3
=1000000cm^3:6000cm^3
=500:3
2)
a)
middle one:8x4/2=16cm
longest one:8x5/2=20cm
b)
shortest one:66x2/(2+4+5)=66x2/11=12cm
middle one:66x4/(2+4+5)=24cm
longest one:66x5/(2+4+5)=30cm
2007-07-30 4:38 am
1.1m^3:6000cm^3
1000000cm^3 / 6000cm^3
500cm^3 / 3cm^3
500cm^3 : 3cm^3
2a. Let X be the length of the three sides.
X x 2 / 2+4+5 =8
2 / 11 = 8 / x
2x = 88
x = 44
so the length og the three sides is 44cm.
The length of the second side of the triangle.
44 x 4 / 11
= 16 cm
The length of the thrid side of the triangle.
44 x 5 / 11
= 20 cm
2b. The length of the first side of the triangle.
66x2/11
=12cm
The length of the second side of the triangle.
66x4/11
=24cm
The length of the third side of the triangle.
66x5/11
=30cm
1000000cm^3 / 6000cm^3
500cm^3 / 3cm^3
500cm^3 : 3cm^3
2a. Let X be the length of the three sides.
X x 2 / 2+4+5 =8
2 / 11 = 8 / x
2x = 88
x = 44
so the length og the three sides is 44cm.
The length of the second side of the triangle.
44 x 4 / 11
= 16 cm
The length of the thrid side of the triangle.
44 x 5 / 11
= 20 cm
2b. The length of the first side of the triangle.
66x2/11
=12cm
The length of the second side of the triangle.
66x4/11
=24cm
The length of the third side of the triangle.
66x5/11
=30cm
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