You multiply $15 by 23 which is 345. Then you multiply 345 by 52 for there is 52 in a year. The answer $17940.
We know that the perimeter of a cylinder is 2πr we will find it as we do always. The perimeter will be :
2 pi r
= 2 pi * 20
= 40 pi
Because it says rounded to the nearest tenth the answer will be : 125.6 cm^3
Because we have a half of a cylinder we will just divide the answer we got by 2:
125.6cm^3 /2 =62.8
The answer is 62.8 cm^3
Answer:
25.55
Step-by-step explanation:
Let us take the number he thinked of be x .
<u>On </u><u>doubling</u><u> </u><u>it </u><u>:</u><u>-</u><u> </u>
→ N = 2x
<u>On </u><u>adding</u><u> </u><u>1</u><u>9</u><u> </u><u>:</u><u>-</u><u> </u>
→ N = 2x + 19
<u>According</u><u> to</u><u> Question</u><u> </u><u>:</u><u>-</u><u> </u>
→ 2x + 19 = 70.1
→ 2x = 70.1 - 19
→ 2x = 51.1
→ x = 51.1/2
→ x = 25.55
<h3>
Hence the required answer is 25.55</h3>