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kiruha [24]
3 years ago
5

What is 21/99 in a decimal form

Mathematics
1 answer:
Norma-Jean [14]3 years ago
7 0

Answer:

0.2121~

Step-by-step explanation:

It's a repeating number. 0.0212121212

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Two similar prisms have heights 4 cm and 10 cm. What is the ratio of their surface areas?
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H 1 : H 2 = 4 : 10
H 1 = 2/5 H 2
and also for the base: L 1 = 2/5 L 2 and W 1 = 2/5 L 2
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A 2 = 2 L 2 x W 2 + 2 L 2 x H 2 + 2 W 2 x H 2
A 1 / A 2 = 4/25 *( 2 L 2 x W 2 + 2 L 2 x H 2 + 2 W 2 H 2 ) /
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= 4/5
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