CATDOLL : CATDOLL: There is a black spot on my calf that is covered with hair and sometimes it itches for five years.

1. There is a black spot on my calf that is covered with hair and is a little itchy sometimes. It has been there for five years.

Condition Analysis: Hello, you don't need to worry about your current condition. It cannot be ruled out that it is caused by a mole. Go to the hospital for a check-up.

Suggestions: It is recommended that you strengthen your nutrition, avoid fatigue and cold, and go to the hospital's dermatology department for examination and treatment.

2. Dwarf trees with small leathery leaves in the green belt

Is it the Great Merit Plant? There are two types, narrow-leaved and broad-leaved. It is usually planted under trees and is a shade-tolerant plant. You can search for pictures on Baidu. There are also pictures on the Flower and Tree Basket Base website. See if it is the one you are talking about.

3. To wrap a small gift box, you need a 31-centimeter-long ribbon. There are 320 such small gift boxes. Estimate: is 90 meters of ribbon enough?

31 cm equals 0.31 m 0.31 m multiplied by 320 equals 99.2 m

99.2》90 meters

So not enough

4. A 31-centimeter-long ribbon is needed to wrap a small gift box. There are 320 small gift boxes. Estimate whether 90 meters of ribbon is enough?

31 centimeters equals 0.31 meters, and 0.31 times 320 is definitely greater than 910, because 0.3 times 300 equals 910.

5. Xiaojia used a 31.2 cm long ribbon to form a rectangle. Its length is 3 times its width. What are the length and width of the rectangle?

Width 3.9 cm Length 11.7 cm