Area calculation formula of various geometric figures

Regular edge: S = a * a rectangle: S = a * B trapezoid: S = (a + b) * H / 2
Triangle: S = a * H / 2
What specific geometric figure area calculation formula do you want?

RELATED INFORMATIONS

1. The formula of geometric figure solution?
2. Seeking derivative of compound function by chain rule H (x) = f [g (x)], f (x) = the square of X, G (x) = 2x
3. Is the derivative of function f (x) = [(4 + x ^ 2) ^ (1 / 2)] / 2 + (6-x) / 6 calculated by power law or by chain rule? How to choose the derivative formula?
4. How to use the chain rule to find the derivatives of some exponential functions based on e? For example, how to use the chain rule to solve the derivatives of e ^ (- x ^ 2)?
5. Why is the derivative of y = 2 (50-x) not right? The correct answer is - 2 and I get the answer by y = 2U, u = 50-x
6. Four arithmetic problems of grade 6
7. Each of the four mixed operations and simple operations has 20 questions People's Education Press
8. Four mixed operations and simple problems each
9. 1.123456+23456+345612+456123+561234+612345=? 999981998 × 11111111 / 121 =?
10. Who give me 200 calculation questions, grade six more points, I give all points Don't spray me,
11. Formula of geometric figure
12. Who has all the geometric formulas
13. Calculation formula of area and perimeter of geometric figure commonly used by Turner I read little, and I want to learn from you,
14. 25 four operations (fraction) with process and answer
15. Four arithmetic exercises in grade five It should be simple and easy to take off 8.5 by 25.5 by 75 =8.5 times [25 plus 75] =8.5 times 100 =850 Or something
16. Fourth arithmetic question bank of grade five
17. There are three workshops in the toy factory. The number of people in the second workshop accounts for two fifths of the total number of people in the workshop. The number of people in the first workshop accounts for () of the total number of people in the workshop. The number of people in the third workshop accounts for () of the total number of people in the workshop
18. Requirements: more than 4 steps I hope there is a process
19. Four operations of decimals in Grade 6 More than three
20. One day, Dongdong went to school with a schoolbag. After walking for five minutes, her mother found that she had forgotten her math book. Her mother immediately went to catch up with him. It is known that Dongdong walks 60 meters every minute, and her mother walks 30 meters more than Dongdong. How many minutes can she catch up with Dongdong?