Questions on Geometry: Triangles answered by real tutors!

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Question 865346: If the area of equilateral triangle ABC is 12 cm2. What is the area of equilateral triangle DEF if the sides are two times as long as the sides of triangle ABC?
Click here to see answer by mananth(16946)

Question 865366: Right triangle DEF has sides that measure x, x, and x squared for the some value of x. What is the area of triangle DEF to the nearest 0.1 square unit?
Click here to see answer by richwmiller(17219)

Question 865454: The perimeter of a triangle is 142 meters. If two of the sides are 55 meters and 38 meters. Find the third side and the area of the triangle in square yards .
Click here to see answer by ewatrrr(24785)

Question 865453: The perimeter of a triangle is 142 meters.if two of the sides are 55 meters and 38 meters .find the third side and the area of the triangle in square yards .
Click here to see answer by ewatrrr(24785)

Question 865457: what is the length of hypotenuse if one leg is given?
Click here to see answer by richard1234(7193)

Question 865622: A right triangle has a leg with a measure of 11 and a hypotenuse with a measure of 22. What is the measure of the other leg?
Click here to see answer by ewatrrr(24785)

Question 865621: if the hypotenuse of a right triangle is 1 meter more then then longer leg, and the shorter leg is 5 meters long, find the length of the longer leg

Click here to see answer by ewatrrr(24785)

Question 865636: D(5, 7), E(4, 3), and F(8, 2) form the vertices of a triangle. What is
m DEF?
Click here to see answer by josgarithmetic(39613)

Question 865672: A triangle has sides measured 5 inches , 12 inches , and 13 inches respectively ls this triangle a right triangle ? How do you know?
Click here to see answer by lwsshak3(11628)

Question 865724: The measures of two angles are 63� and. 26�. What is the third angle?
Click here to see answer by jim_thompson5910(35256)

Question 865788: I need explanation of this problem:
In an equilateral triangle ABC with AB = BC = CA = 4cm, the point D is the midpoint of BC and E
is a point between D and C. If AE2 = 13EC2, calculate the area of the triangle AEC. ( sqr 3 = 1.732)

Click here to see answer by KMST(5328)

Question 865687: I'm trying to find the or thickener if a triangle on a graph. The point are 0,5 -4,0 and 10,-3. I tried finding the equations of two of the sides but didn't get an answer.
Click here to see answer by richwmiller(17219)

Question 865850: The acute angle of a right triangle are in ratio 4:5 find the measure of each acute angle

Click here to see answer by josgarithmetic(39613)

Question 865952: The length of the hypotenuse of a right triangle is 10 inches and one of the legs is 8 inches long. How long is the other leg?
Click here to see answer by ewatrrr(24785)

Question 866016: Hi, I've spent like an hour trying to figure out this question. Can you please help me out? Thanks a lot!
An A-frame house is 45 feet high and 32 feet wide. Find the measure of the angle that the roof makes with the floor. Round to the nearest degree.
Thanks again! :)
Click here to see answer by ewatrrr(24785)

Question 866032: The legs of a right triangle 2 radical 3 and 5.what is the length of the hypotenuse ?
(These are the choices given
(1) radical 31
(2)radical 37
(3) radical 43
(4) radical 17
please explain the answer
Click here to see answer by ewatrrr(24785)

Question 866048: Hi, can someone please help me out on this? Thanks a lot!
A tree grew at a 3� slant from the vertical. At a point 60 feet from the tree, the angle of elevation to the top of the tree is 14�. Find the height of the tree to the nearest tenth of a foot.
Thanks again.

Click here to see answer by stanbon(75887)

Question 865703: A 3D figure has a right triangular base. The perimeter of the base is 5 linear yards. The area of the base is 1 1/8 yards squared. The volume of the figure is 5 1/16 yards cubed. The height of the figure is 3 times the length of the height of the base. What are the dimensions of the figures base? What is the height of the figure?
Click here to see answer by ankor@dixie-net.com(22740)

Question 866164: Triangle ABC is a right triangle. The measure of angle A is 37 degrees. Find the measures of angle B and C.
Click here to see answer by Roxy21(3)

Question 866175: If I have one right triangle with a base of 24cm and a height of 16cm and another triangle with a base of 9cm, what is the scale factor? Note both triangle have 30, 60 and 90 degree angles
Click here to see answer by josgarithmetic(39613)

Question 866325: the perimeter of the traingle below is 88 units. find the length of side AC
ac=3z
cb=z+3
ab=4z-3
Click here to see answer by MathLover1(20849)

Question 866324: Using cosine and sine what is angle x if it is a right triangle with a hypotenuse of 15 and a base of 12?
Click here to see answer by Fombitz(32388)

Question 866372: if an isosceles triangle has a perimeter of 24 units, what is a possible set of lengths of all three sides
Click here to see answer by ewatrrr(24785)

Question 866372: if an isosceles triangle has a perimeter of 24 units, what is a possible set of lengths of all three sides
Click here to see answer by MathLover1(20849)

Question 866380: Given the right triangle DEF with E=90�, if e=18 and D=27�, find side d
Click here to see answer by josgarithmetic(39613)

Question 866458: how do i find the height of a right triangle if i only have the volume (72 metres cubed) and the base (800cm x 300cm) or (8m x 3m)?
Click here to see answer by richard1234(7193)

Question 866506: find the distnace bewteen each of the following pairs of points
A)(2,7) and (12,7)
Click here to see answer by checkley79(3341)

Question 866536: In the right triangle ABC, point B is a right angle. If the measure of point A is 40 degrees, what is the measure of point C?
Click here to see answer by Alan3354(69443)

Question 866535: In the right angle ABC, point B is a right angle. If the measure of point A is 40 degrees, what is the measure of point C?
Click here to see answer by Alan3354(69443)

Question 866601: If the triangle has 4,8,and7 cm on all three sides is it correct or not?
Click here to see answer by Alan3354(69443)

Question 866764: Hey! I am having difficulty answering this question, may you please help me?
"Trish is working out the height of a communications tower. From point A she takes a sighting of the top of the tower (30 degrees). She then moves 100 metres to point B and takes another sighting (85 degrees). Calculate the height of the tower, to the nearest metre."
I really appreciate your help. Thank you!
Click here to see answer by Theo(13342)

Question 866762: Hi! :) Can you please help me with this question?
The question states: "From point D, the angle of elevation of a cliff top (F) is 42 degrees. After walking 75 m along a street inclined at 11 degrees (D to E), the angle of elevation from point E is 55 degrees."
There are two question I'm stuck on! I hope you don't mind!
1) Work out angles FDE and DEF
2) Find the height of the cliff, FG.
Thank you so much for your help in advanced!!
Best regards, student. ~
Click here to see answer by rothauserc(4718)

Question 866876: in an isosceles triangle each of the equal sides is 10 . If the area of the triangle is less than 48 sq m which of the following is a possible measure of the third side
Click here to see answer by josgarithmetic(39613)

Question 867010: I am having trouble with one of my math questions. The question is < BAE measures 90 degrees. Solve for x. By the way it's an angle.
Click here to see answer by richwmiller(17219)

Question 867053: an isosceles trapezoid has consecutive side of lengths 10, 6, 10 and 14 find the measure to the nearest integer of each angle of the trapezoid

Click here to see answer by josgarithmetic(39613)

Question 867105: Please help me! I am so confused on this, I have tried it several times but its just not clicking tonight.. The question is.
The area of a right triangle is 260 in^2
Find the length of its legs if one leg is 6 inches longer than the other. (Use the five step method and show ALL work for full credit.)

If you could please explain this when helping me with this problem so I can solve the other problems similar to this one on my own. Thank you!
Click here to see answer by josgarithmetic(39613)

Question 867103: find the area of a triangle with sides 23cm, 26cm, 31cm to thee nearest ten cintemeters.

Click here to see answer by josgarithmetic(39613)

Question 867149: what are the fewest measurements you need to construct a triangle

Click here to see answer by stanbon(75887)

Question 867149: what are the fewest measurements you need to construct a triangle

Click here to see answer by rothauserc(4718)

Question 867283: SHOW ALL WORK!
Where applicable, round angles to the nearest degree and sides to the nearest tenth.
Solve the triangles.
a = 7, b = 8 & c = 10
Click here to see answer by Alan3354(69443)

Question 867281: SHOW ALL WORK!
Where applicable, round angles to the nearest degree and sides to the nearest tenth.
Solve the triangles.
∠B = 51�, ∠C = 90� & b = 14
Click here to see answer by Alan3354(69443)

Question 867279: SHOW ALL WORK!
Where applicable, round angles to the nearest degree and sides to the nearest tenth.
Solve the triangles.
∠B = 150�, a = 3 & b = 7

Click here to see answer by Alan3354(69443)

Question 867282: SHOW ALL WORK!
Where applicable, round angles to the nearest degree and sides to the nearest tenth.
Solve the triangles.
∠A = 30�, b = 12 & c = 24
Click here to see answer by Alan3354(69443)

Question 867275: SHOW ALL WORK!
Where applicable, round angles to the nearest degree and sides to the nearest tenth.
Solve the triangles.

∠A = 60�, ∠B = 70� & b = 20
Click here to see answer by Alan3354(69443)

Question 867274: SHOW ALL WORK!
Where applicable, round angles to the nearest degree and sides to the nearest tenth.
Solve the triangles.
∠B = 37�, ∠C = 90� & c = 22
Click here to see answer by Alan3354(69443)

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