blancasimon239
04.04.2020 •
Mathematics
Identify this conic section.
9x2 + 4y2 = 36
line
circle
ellipse
parabola
hyperbola
Solved
Show answers
More tips
- C Computers and Internet iPhone SMS Delivery Report: How to Set It Up...
- C Computers and Internet How to Learn to Type Fast?...
- A Art and Culture Who Said The Less We Love a Woman, the More She Likes Us ?...
- F Family and Home Parents or Environment: Who Has the Most Influence on a Child s Upbringing?...
- H Health and Medicine Is it true that working with a computer is harmful to your eyesight?...
- H Health and Medicine Boosting Immunity: A Complete Guide on How to Improve Your Body’s Natural Defenses...
- P Philosophy Unidentified Flying Object - What is the Nature of this Phenomenon?...
- C Computers and Internet How to Teach Older Generations to Work with Computers?...
- G Goods and services How to Choose a Coffee Maker? The Ultimate Guide for Coffee Lovers...
- C Computers and Internet Porn Banner: What It Is and How to Get Rid Of It?...
Answers on questions: Mathematics
- M Mathematics Question 6 options: tan D tan F cos F sin F...
- M Mathematics X^2−10x−96 rewrite the function by completing the square (x+___)^2+ thanks! *^*...
- M Mathematics What number is 0.1 more than 37.3?...
- M Mathematics The angles and the answers i don’t know any of this...
- M Mathematics Please help i dont understand it and the end of grading cycle is today!...
- M Mathematics Annabel and Eric made 17 ounces of pizza dough. They used 5/8 of the dough to make a pizza and the rest to make calzones. What is the difference between the amount of dough they...
- M Mathematics Wilbur s school is selling tickets to a fall musical. On the first day of ticket sales the school sold 5 adult tickets and 13 child tickets for a total of $161. The school took...
- M Mathematics Can someone please help me...
- M Mathematics If u can make a system of inequalities that d be helpful. just stat what question its for...
- M Mathematics Sam s math teacher offered after school tutoring 16 out of the 30 days in November to help students review for the mid-term exam. Which decimal is equivalent to the fraction...
Ответ:
6 +2√3 ft²
Step-by-step explanation:
Given a triangular pyramid with ...
an equilateral triangular baselateral edge length 2 ftlateral area 6 ft²Find
total surface areaSolution
Since corresponding edges are the same length, the area of each of the three faces is (6 ft²)/3 = 2 ft². This can be computed by ...
A = (1/2)s²·sin(α)
where s is the lateral edge length and α is the angle at the apex formed by the two edges that meet there. Filling in the given values, we find ...
2 ft² = (1/2)(2 ft)²·sin(α)
1 = sin(α) ⇒ α = 90°
That is, each face of the pyramid is an isosceles right triangle with legs of length 2 ft. The hypotenuse of that triangle, the base edge of the pyramid, is then 2√2 ft.
So, the base is an equilateral triangle with edge lengths 2√2 ft. Its area can be computed from ...
A = (√3)/4·s²
where s is the edge length of the equilateral triangle. That is, the base area is ...
A = (√3)/4·(2√2)² = 2√3 . . . . square feet
So, the total surface area of the pyramid is ...
(6 +2√3) ft² ≈ 9.4641 ft² . . . . . total surface area