(Простите, пожалуйста, мой английский. Русский не мой родной язык. Надеюсь, у вас есть способ перевести это решение. Если нет, возможно, прилагаемое изображение объяснит достаточно.)
Use the shell method. Each shell has a height of 3 - 3/4 <em>y</em> ², radius <em>y</em>, and thickness ∆<em>y</em>, thus contributing an area of 2<em>π</em> <em>y</em> (3 - 3/4 <em>y</em> ²). The total volume of the solid is going to be the sum of infinitely many such shells with 0 ≤ <em>y</em> ≤ 2, thus given by the integral
Or use the disk method. (In the attachment, assume the height is very small.) Each disk has a radius of √(4/3 <em>x</em>), thus contributing an area of <em>π</em> (√(4/3 <em>x</em>))² = 4<em>π</em>/3 <em>x</em>. The total volume of the solid is the sum of infinitely many such disks with 0 ≤ <em>x</em> ≤ 3, or by the integral
Using either method, the volume is 6<em>π</em> ≈ 18,85. I do not know why your textbook gives a solution of 90,43. Perhaps I've misunderstood what it is you're supposed to calculate? On the other hand, textbooks are known to have typographical errors from time to time...
Answer:
36 - 18 longest side = 18
Step-by-step explanation: This would mean both sides are 18.
Answer:
Rs. 5500
Step-by-step explanation:
The government has declared that farm workers should be paid Rs. 71 for a day's work
The landlord Mohan pays Rahul Rs. 60 and pays Rs. 55 to his wife
Rahul works for 55 days
= 60 × 55
= Rs. 3,300
His wife works for 40 days
= 55 ×40
= Rs. 2,200
Therefore the total amount of money earned together can be calculated as follows
= 3300 + 2200
= Rs. 5500
Hence they will earn Rs. 5500 together
A rational number can be expressed as the ratio of two integers.
Where a and b are integers and b is not equal to 0.
The rational number 8.8 can be expressed as two integers. Like
Answer:
A stretch will make the figure longer or wider than the original figure while a shrink will make the figure smaller then the original figure.
Step-by-step explanation:
Stretching something makes it longer, and thinner. A shrink will make the figure smaller and thicker then the original.