Each classroom is 8 meters long, 6 meters wide and 3.5 meters high. The area of the blackboard with doors and windows is 25 square meters. What is the area of painting around the classroom and the ceiling

Each classroom is 8 meters long, 6 meters wide and 3.5 meters high. The area of the blackboard with doors and windows is 25 square meters. What is the area of painting around the classroom and the ceiling

Perimeter * room height is the wall area, and then calculate it by yourself

If a bamboo pole is less than 6 meters long, measure it from one end to 3 meters and make a mark a, then measure it from one end to 3 meters and make a mark B. at this time, the distance between AB is 20% of the total length, then the length of the bamboo pole is______ Rice

(3 + 3) / (1 + 20%) = 6 / 120%, = 5 (m); answer: the length of bamboo pole is 5 m

If a bamboo pole is less than 6 meters long, measure it from one end to 3 meters and make a mark a, then measure it from one end to 3 meters and make a mark B. at this time, the distance between AB is 20% of the total length, then the length of the bamboo pole is______ Rice

(3 + 3) / (1 + 20%) = 6 / 120%, = 5 (m); answer: the length of bamboo pole is 5 m

A bamboo pole is less than 6 meters long. Measure it from one end to 3 meters and mark a once. Measure it from the other half to 3 meters and mark B once. This is the distance between AB and 20% of the total length
If there is an equation, please say the solution (process) of the equation is good

The total length is x meters
X+20%X=3+3
1.2X=6
X=6÷1.2
X=5
The total length is 5 meters

If a bamboo pole is less than 8 meters long, make a mark a when measuring from one end to 4.5 meters, and then make a mark B when measuring from the other end to 4.5 meters, then the distance between AB and ab is full
20% of the length of the bamboo pole?

If a bamboo pole is less than 8 meters long, make a mark a from one end to 4.5 meters, and then make a mark B from the other end to 4.5 meters. At this time, the distance between a and B is 20% of the total length?
（4.5+4.5）÷（1+20%）
=9÷120%
=7.5m

The length of a bamboo pole is less than 6 meters. Xiaoming measures 3 meters from one end to mark a, and then measures 3 meters from the other end to mark B. at this time, the distance between AB is just 20% of the length of the bamboo pole
Find the length of bamboo? 6 / (1 + 20%) for easy to understand analysis and explanation

Length of bamboo pole? = 5m

If a bamboo pole is less than 6 meters long, measure it from one end to 3 meters and make a mark a, then measure it from one end to 3 meters and make a mark B. at this time, the distance between AB is 20% of the total length, then the length of the bamboo pole is______ Rice

(3 + 3) / (1 + 20%) = 6 / 120%, = 5 (m); answer: the length of bamboo pole is 5 m

If a bamboo pole is less than 6 meters long, measure it from one end to 3 meters and make a mark a, then measure it from one end to 3 meters and make a mark B. at this time, the distance between AB is 20% of the total length, then the length of the bamboo pole is______ Rice

(3 + 3) / (1 + 20%) = 6 / 120%, = 5 (m); answer: the length of bamboo pole is 5 m

Square of (3m + 2n) - (3m-2n)

Square of (3m + 2n) - (3m-2n)
=（3m+2n+3m-2n）(3m+2n-3m+2n)
=6m×4n
=24mn;
If you don't understand this question, you can ask,

2 (3m + 2n) - 3 (3m + 2n) + 8 (3m + 2n) - 6 (3m + 2n)
First simplify, then evaluate, where M = - 4 / 3, n = 1 / 2

2 (3m + 2n) - 3 (3m + 2n) + 8 (3m + 2n) - 6 (3m + 2n)
=Square of (2-3 + 8-6) (3m + 2n)
=(3m+2n)²
When m = - 4 / 3, n = 1 / 2
The original formula = (3m + 2n) & #178; = (- 4 + 1) & #178; = 9