# lesson20: 小テスト復習（授業練習用）
##
###### tags: `練習用`
## 例：
:::info
Code:

r = float(input("Please input value r:"))
r_Round = r * 2 * 3.14
r_Area = r * r * 3.14
print("The round:", r_Round)
print("The area:", r_Area)

結果：
:::

---
## 1.
:::info
Code:

結果：

:::

---

## 2.
:::info
Code:

num=[283,768,77,8,2077]
temp=num[0]
num[0]=num[4]
num[4]=temp
print(num)

結果：

:::

---

## 3.
:::info
Code:

number = [1, 3, 4, 5]
number.append(2)
print(number)

結果：

:::

---

## 4.
:::info
Code:

number = [283, 768, 77, 8, 2077]
number_sum = 0
for i in range(len(number)):
    number_sum += i
print(number_sum)

結果：

:::

---

## 5.

:::info
Code:

number = [283, 768, 77, 8, 2077]
l = len(number)
temp = number[0]
number[0] = number[l-1]
number[l-1] = temp
print(number)

結果：

:::

---
## 6.
:::info
Code:

結果：

:::

---

## 7.
:::info
Code:

結果：

:::

---

## 8.
:::info
Code:

結果：

:::

---

## 9.
:::info
Code:

結果：

:::

---

## 10.

:::info
Code:

結果：

:::

---