![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
The area of a triangle is 24 square decimeters. What is the base and height? The base and height are integers
bottom × Height = 2 × 24=1 × 48=2 × 24=3 × 16=4 × 12=6 × 8;
So it may be 1 and 48 respectively; 2,24； 3,16； 4,12； 6,8；
Friends who ask questions by mobile phone can comment on [satisfaction] in the upper right corner of the client
The circumference of a semicircular piece of paper is 10.28 decimeters, and its area is______ Square decimeter
According to the stem analysis, we can get: 10.28 ÷ (3.14 + 2),
=10.28÷5.14，
=2 (decimeter),
three point one four × 22 ÷ 2 = 6.28 (square decimeter);
A: its area is 6.28 square decimeters
So the answer is: 6.28
The circumference of a semicircular piece of paper is 10.28 decimeters, and its area is______ Square decimeter
According to the stem analysis, we can get: 10.28 ÷ (3.14 + 2),
=10.28÷5.14，
=2 (decimeter),
three point one four × 22 ÷ 2 = 6.28 (square decimeter);
A: its area is 6.28 square decimeters
So the answer is: 6.28
The circumference of a semicircular piece of paper is 10.28 decimeters. What is its area? (solved in two ways)
If the radius of semicircular paper is r, then 2 π R / 2 + 2R = 10.28 (π + 2) × R = 10.28 r = 10.28 ÷ 5.14 = 2 (decimeter), then its area is π R ²/ 2=3.14 × two ²/ 2 = 6.28 (square decimeter) 2 normal radius 10.28 ÷ (3.14 + 2)
The circumference of a semicircular piece of paper is 10.28 decimeters, and its area is______ Square decimeter
According to the stem analysis, we can get: 10.28 ÷ (3.14 + 2),
=10.28÷5.14，
=2 (decimeter),
three point one four × 22 ÷ 2 = 6.28 (square decimeter);
A: its area is 6.28 square decimeters
So the answer is: 6.28
The circumference of a semicircular piece of paper is 10.28 decimeters, and its area is______ Square decimeter
According to the stem analysis, we can get: 10.28 ÷ (3.14 + 2),
=10.28÷5.14，
=2 (decimeter),
three point one four × 22 ÷ 2 = 6.28 (square decimeter);
A: its area is 6.28 square decimeters
So the answer is: 6.28
RELATED INFORMATIONS
- 1. Painting the perimeter of the auditorium is 24 meters wide and 24 meters high, with a total area of 64 square meters. If the coating cost is 1,2 yuan per square meter, it will cost at least a few yuan
- 2. In triangle ABC, if a = 1, B = root 3, a + C = 2B, solve the triangle
- 3. Given that angle a is the inner angle of triangle ABC, and SINB + C / 2 = root 3 / 2, find cosa
- 4. In triangle ABC, the perimeter root is 2 + 1 and SINB + sinc = root 2sina, and the area of triangle ABC is 1 / 6 * Sina to find Sina
- 5. In △ ABC, SINB + sinc = Sina (CoSb + COSC). Judge that the shape of △ ABC is ___
- 6. The area of a triangle is 25.2 square decimeters and the bottom is 8 decimeters. How many decimeters is the height of this triangle?
- 7. In the plane rectangular coordinate system, given the points a (- 4,0), B (2,0), the area of angle ABC is 12, and try to lack the coordinate characteristics of point C
- 8. In the plane rectangular coordinate system, point a (0,2), point B (0, - 3), the area of triangle ABC is 5, and the distance from point C to X axis is known
- 9. Maximum area of triangle knowledge (Mathematics) One side of a triangle remains unchanged, and the length and sum of the other two sides remain unchanged. Verification: when it is an isosceles triangle, the area is the largest Don't use Helen's formula, ellipse knowledge, etc. It's best to have junior high school knowledge Time is limited, close in 2 hours! I just want to find an expert to answer, and I have something to do in the afternoon. It's useless if I can't see the answer. Get out of the way.. Thank you for your answer on the third floor, but I can do that, too. It's feasible.. Is there a theoretical method??? Thank you for your answer on the 6th floor, but what I want is a theoretical method Similarly, thanks to the 5th floor. Mathematics should be rigorous. It's not obvious~~~
- 10. Q: are two triangles of equal circumference the same size? It's best to explain why it's the same size or different
- 11. Help calculate this triangle area formula. In △ ABC, we know the length of ∠ a ∠ B and C (C is the opposite side of ∠ C) to find S. help give a formula In △ ABC, given the length of ∠ a ∠ B and C (C is the opposite side of ∠ C), find s and give a formula So many answers, which one is right? I'm confused and can't understand. Can you elaborate? Thank you very much
- 12. (1 / 3) mathematical problems such as similar triangles. (1) it is known that triangle ABC is similar to triangle DFE and the area ratio is 4:25, then triangle ABC and three (1 / 3) mathematical problems such as similar triangles （1） It is known that triangle ABC is similar to triangle DFE and the area ratio is 4:25, then triangle ABC and triangle DFE are on the corresponding sides BC and ef
- 13. In △ ABC, if Tana = 1 3, C = 150 °, BC = 1, ab = () A. ten B. 2 ten ten C. 2 ten D. ten two
- 14. In the known triangle ABC, a-c = 90 degrees a + C = root 2b is used to calculate the angle C
- 15. In the acute angle △ ABC, it is known that ∠ B = 60 °, and the root number (1 + cos2a) (1 + cos2c) = (root number 3-1) / 2, calculate the values of ∠ A and ∠ C
- 16. The ratio of the length of the three sides of a right triangle is 3:5:4. It is known that the circumference of the right triangle is 36 cm. How many square centimeters is its area?
- 17. The circumference of ABC of a right triangle is 24 cm, and the length ratio of its three sides is 3:4:5. Calculate the area of the shaded part
- 18. The perimeter of a right triangle is 2+ 6. If the length of the center line on the hypotenuse is 1, the area of the triangle is equal to () A. 1 B. 1 two C. 1 four D. 3 four
- 19. In triangle ABC, ab = 17, AC = 15, the center line ad on the side of BC = 4, calculate the area of triangle ABC
- 20. In triangle ABC, the sides a, B and C opposite to a, B and C, side C = 7 / 2, and Tana + tanb = root 3 × Tanatan B - radical 3, and triangle ABC In triangle ABC, the sides a, B and C opposite to a, B and C, side C = 7 / 2, and Tana + tanb = root 3 × Tanatanb - root sign 3, and the area of triangle ABC is (3 times root sign 3) / 2. Find the value of a + B