Answer:
x = 18
Step-by-step explanation:
Since both right triangles are similar, therefore:
Cross multiply
Subtract 780 from both sides
x + 23 = 0
x = -23
Or
2x - 36 = 0
2x = 36
x = 18
3. Twice the sum of 10 and a number is 28. Find the number.
1 answer:
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<em>Volume= a³</em>
<em>a=edge</em>
<em>2197 = a³</em>
<em>=> a=13 m</em>
<em>Surface area=6a²=6*13²=6*169=1014 m²</em>
<em>
= 25,35 ≈ 26</em>
<em>=> <u>26 cans needed</u></em>
<em>a=edge</em>
<em>2197 = a³</em>
<em>=> a=13 m</em>
<em>Surface area=6a²=6*13²=6*169=1014 m²</em>
<em>
<em>=> <u>26 cans needed</u></em>