Find the surface area of this net
1 answer:
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The perimeter of the equatorial triangle is 24 units
<h3><u>Solution:</u></h3>Given that,
An equilateral triangle has an height equal to
The triangle is shown below
From Triangle ABC in the shown figure AD
Let the sides of the equilateral triangle be ‘a’
AB = BC = a
Since, it is an equilateral triangle we get,
BD = DC = a ÷ 2
Now, using Pythagoras Theorem in Triangle ABD,
The Pythagorean theorem is this: In a right triangle, the sum of the squares of the lengths of the two legs is equal to the square of the length of the hypotenuse.
a = 8
Hence, the three sides of the triangle are 8 units each
In equilateral traingle, length of all three sides of triangle are equal
So, Perimeter = 3 (Length of each side of triangle)
Perimeter = 3 8 = 24
Thus the perimeter of the equatorial triangle is 24 units
Answer:
Point A is miles far from point B.
Step-by-step explanation:
Draw a diagram by using the given information.
1. Move 8 units up to reach at point Q. (Walk from point A ,8 miles due north).
2. Move 5 units right to reach at point R. (5 miles dues east)
3. Move 4 units down to reach at point B. (4 miles due north to point B)
4. Drawn a line PB as shown below.
From the below figure it is clear that
AP = 8-4 = 4 miles
PB = QR = 5 miles
Using Pythagoras we get
Taking square root on both sides.
Therefore, point A is miles far from point B.
