The length of three sides of a triangle is proportional to 2; 3; 4.Three heights corresponding to those 3 sides are proportional to which 3 numbers?
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The lengths in cm of three sides of a triangle are three consecutive odd numbers. Knowing that the perimeter of the triangle is 39cm, find the length of the longest side of the triangle. Show your work.
The lengths in cm of three sides of a triangle are three consecutive odd numbers.
Knowing that the perimeter of the triangle is 40.5 dm, find the length of the longest side of the
triangle.
A.137cm
B.135cm
C.143cm
D.145cm
40.5dm = 405cm
The length of each side averages to : 405 / 3 = 135 ( cm )
The length of the longest side of the triangle is : 135 + 2 = 137 ( cm )
The answer is A.137cm.
Given a square with the length of one side is 8 cm and a isosceles triangle with the length of its base is 12 cm. If the area of the square is equal to the area of the isosceles triangle then what is the length of the height of the isosceles triangle, in cm?
A square and a triangle have equal perimeters. The lengths of three sides of the triangle are 6.2cm, 8.3cm and 9.5cm. The area of the square is...
Perimeters of a triangle is: 6.2+8.3+9.5=24cm
But a square and a triangle have equal perimeters
⇒Perimeters of a square is 24cm
So: the side of a square=\(\dfrac{24}{4}\)=6
Other way: the area of a square=a.a
⇔Ssquare=6*6=36 (cm2)
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The lengths of three sides of a triangle are all primes, and the perimeter of the triangle is 17. Find the sum of all possible value(s) of the second longest side.
if the ratio of 3 sides of a triangle is 2:3:4 then the ratio of 3 heights corresponding to those 3 sides is
Giải:
Gọi 3 cạnh của tam giác là a, b, c và các chiều cao tương ứng là h, k, g \(\left(a,b,c,h,k,g>0\right)\)
Ta có: \(\frac{a}{2}=\frac{b}{3}=\frac{c}{4}\)
\(ah=bk=cg\)
\(\Rightarrow2.\frac{a}{2}.h=3.\frac{b}{3}k=\frac{c}{4}.4.g\)
\(\Rightarrow2h=3k=4g\)
\(\Rightarrow\frac{2h}{12}=\frac{3k}{12}=\frac{4g}{12}\)
\(\Rightarrow\frac{h}{6}=\frac{k}{4}=\frac{g}{3}\)
Vậy 3 chiều cao tương ứng của tam giác tỉ lệ với 6, 4, 3
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if the ratio of 3 sides of a triangle is 2:3:4 then the ratio of 3 heights corresponding to those 3 sides is
if the ratio of 3 sides of a triangle is 2:3:4 then the ratio of 3 heights corresponding to those 3 sides is
Dịch: nếu tỷ lệ 3 cạnh của một tam giác là 2: 3: 4 thì tỷ lệ 3 chiều cao tương ứng với những 3 bên là..........
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if the ratio of 3 sides of a triangle is 2:3:4 then the ratio of 3 heights corresponding to those 3 sides is