Questions on Geometry: Triangles answered by real tutors!

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Geometry: Triangles

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Question 205666: Find the length of side a in the right triangle. If b = 12 and c = 15.
I used the equation a^2 + b^2 = c^2
So far the answer that I came up with was a=√81 but I'm not sure if this is right and I think I have to simplify. Please help.
Thanks!
Click here to see answer by Alan3354(6089)

Question 205681: The legs of a right triangle are 12 and 16 inches long, respectively. What is the area of the triangle?
Click here to see answer by stanbon(26283)

Question 205776: If the angles of a triangle are 130 and 50 what is the other angle
Click here to see answer by Targetweek(62)

Question 205895: Is it possible to solve for the other two sides of a right triangle if the Hypotenuse is 16in and you only know that there is a right angle. You also know that A does not equal B.
Click here to see answer by Edwin McCravy(2922)

Question 205917: It is impossible for a triangle to be which of the following, and please explain why.
A) Both Isosceles and Right
B) Both Equilateral and Equiangular
C) Both Scalene and Acute
D) Both Obtuse and Equilateral.
Click here to see answer by Earlsdon(4900)

Question 206120: In a right triangle the hypotenuse is labeled B. The second longest side is labeled A and the shortest is 3. the angle between side B and 3 is 72 degrees. B= ? and A = ?
Click here to see answer by stanbon(26283)

Question 206154: How do you find the calculator apporximation of the measure of angleA when tanA=0.8?
Click here to see answer by Targetweek(62)

Question 206154: How do you find the calculator apporximation of the measure of angleA when tanA=0.8?
Click here to see answer by Marth(57)

Question 206172: An isosceles triangle has a perimeter of 13 cm. Find all integral possibilites for the lengths of its sides.
Click here to see answer by stanbon(26283)

Question 206418: What is the area of a right triangle that has sides that are 3m, 4m and 5m?
Click here to see answer by Alan3354(6089)

Question 206392: Find the volume.
One side is 8ft., one side is 8 ft., one side is 4 ft., and the width is 2ft.
Right triangular prism
Round your answer to the nearest hundredth, if necessary
I am wondering if I can just multiply 8x8x2 and then divide the answer by 2? I am stuck on this one. Please help.Thanks
Click here to see answer by Alan3354(6089)

Question 206705: This deals with perimeters and area from a practice worksheet, not a textbook
I am not sure how to solve:
1) A right triangle with base 5 inches, height 12 inches and hypotenuse 13 inches.
2)A circle with a diameter 14 inches
Thank you for your help. If there is a formula for these equations, what is it?

Click here to see answer by stanbon(26283)

Question 206886: I'm having trouble understanding this statement: If triangle ABC is similar to triangle DEF
AB=4, BC=8, AC=11
DE=10, EF=20, DF=n Solve for n.
I know the perimeter of a triangle is P=a+b+c but I can't seem to solve for n. It's like there are 2 unknowns. Can you please let me know what I am doing wrong. Thank-you!
Click here to see answer by jim_thompson5910(13794)

Question 206904This question is from textbook Prentice Hall Mathematics: Alegbra 2
: The sides of a triangle are in the ratio 3:4:5. What is the length of each side if the perimeter of the triangle is 30 cm?This question is from textbook Prentice Hall Mathematics: Alegbra 2

Click here to see answer by rfer(2688)

Question 206930: proof, sin t x csc t (tan t x cot t) = sec^2 t + csc^2 t
Click here to see answer by Alan3354(6089)

Question 206813: If two altitudes of a triangle are equal , prove that the triangle is an isosceles triangle .
Click here to see answer by RAY100(1637)

Question 207240: Please help me solve this problem..... The ratio of one side of triangle ABC to the corresponding side of a similar triangle DEF is 4:3. The perimeter of triangle DEF is 24 inches. What is the perimeter of triangle ABC?

Thanks SO much!!!!
Click here to see answer by Alan3354(6089)

Question 207293: Prove that the length of the altitude of equilateral triangle of side 'a' is square root of 3/2 *a square?
Click here to see answer by vleith(1977)

Question 207510: Which triangle shows a possible set of measurements for a right triangle?
12x20x10
8x6x12
8x8x14
21x 35x 28

Click here to see answer by Alan3354(6089)

Question 207632This question is from textbook Geometry
: the perimeter of a figure is the sum of the lengths of its sides. the vertices of a triangle are located at X(-2,-1), Y(2,5), and Z(4,3). what is the perimeter of this triangle? round to the nearest tenth.This question is from textbook Geometry

Click here to see answer by rfer(2688)

Question 207744This question is from textbook Elementary and Intermediate Algebra
: The width of a rectangle gate is 2 meters larger than its height. The diagonal breace measures (sqrt 6 meters). Find the width and the height.
I'm lost. I think I need to set it up as a^2 + b^2 = c^2, I'm not sure...but I still don't know where to go from there. Please help!! This question is from textbook Elementary and Intermediate Algebra

Click here to see answer by nerdybill(2446)

Question 208078: An equilateral triangle has a perimeter of 24 m and an area of 16 square root 3m^2. Find the altitude of the triangle.
Click here to see answer by nerdybill(2446)

Question 208115: In the figure, what is the length of QR inches? PQ is 102 in. PR is 80 inches. The height is 48 inches.
Click here to see answer by rapaljer(3621)

Question 208327: If measures of the angles of the triangle are 40,50and 90.Can you classify the triangle by its sides?
Click here to see answer by rfer(2688)

Question 208516: Find the area of a triangle if the base is 12x^7, and the height is 5x^8. 2nd problem- Find the area of a rectangle if the length is 36y^3 and the width is 14y^5
Click here to see answer by checkley77(7062)

Question 208953: #70 and #74
find the missing side of the right triangle with legs a= 15, b= 20
find the missing side of the right triangle with legs a= 5, b= 12
Click here to see answer by stanbon(26283)

Question 209226: the ratio of the length of a rod and its shadow is 1:√3.find the attitude of the sun?
Click here to see answer by Theo(675)

Question 209282: Can the measures represent sides of a right triangle? Explain your answers: 30 cm, 40 cm, 50 cm
Click here to see answer by nyc_function(260)

Question 209423: if the measure of an exterior angle drawn at vertex M of triangle LMN is x, then measure angle L + measure angle N is what?
Click here to see answer by RAY100(1637)

Question 209219: the ratio of the length of a rod and its shadow is 1:root3. what is the altitude of the sun?
Click here to see answer by Earlsdon(4900)

Question 209608: the largest angle of a triangle is 3 times the smallest angle. the middle angle is 30 degrees more than the smallest angle. find the number of degrees in each triangle
Click here to see answer by stanbon(26283)

Question 209797:
Click here to see answer by silencehurts(5)

Question 209860: Area of a triangle. Find the exact area of a triangle with
a base of square root 30 meters and a height of square root 6 meters.
Click here to see answer by checkley77(7062)

Question 209987: the sides of a triangle are in the ratio 2:7:10. Find the shortest side if the perimeter is 57
Click here to see answer by Earlsdon(4900)

Question 209990: sporting store sold twice as many t-shirts as shorts. T-shirts are 9.00 each, and shorts are 14.00 each. the total amunt of money taken in for both items was 256.00 find the number for each that was sold

Click here to see answer by checkley77(7062)

Question 209949This question is from textbook Pre- Algebra
: Question: The second angle in a triangle is twice as large as the first. The third angle is three-fourths as large as the first. Find the angle measures and draw a possible picture.This question is from textbook Pre- Algebra

Click here to see answer by DRichardson(63)

Question 210225: the area of a triangle is 152 m squared, and the height is 16 m. what us the base?
Click here to see answer by nerdybill(2446)

Question 210248: How do I find the perimeter of this triangle, when its side lengths are 3x, 8, and 5x
Click here to see answer by jim_thompson5910(13794)

Question 203614: Two triangles are similar. The ratio of their areas is 1:4. If the height of the smaller triangle is 3 cm, how long is the corresponding height of the larger triangle, in centimeters?
Click here to see answer by HyperBrain(694)

Question 210403: one side is 9in and one side is 12in whay is the third side

Click here to see answer by Earlsdon(4900)

Question 210640: in a right triangle, the leangth of the hypotenuse is 20 inches and the length of one leg is 15 inches. What is the length of the other leg?
Click here to see answer by Earlsdon(4900)

Question 210724This question is from textbook College Algebra
: The sum of the lengths of the two legs of a right triangle is 34 meters. If the length of the hypotenuse is 26 meters, find the length of each leg.This question is from textbook College Algebra

Click here to see answer by Earlsdon(4900)

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