Answer:
The length side of the square is
Step-by-step explanation:
The question in English is
Find the measure of the side of a square whose diagonal is 14 cmd
Let
d ----> the diagonal of a square in cm
b ---> the length side of a square in cm
we know that
Applying the Pythagorean Theorem
see the attached figure to better understand the problem
we have
substitute the given value
solve for b
take square root both sides
simplify
B) 31 in.
C) 30 in.
D) 21 in.
The correct answers are:
87.96; 224.7; 686.98.
Explanation:
In order to write these numbers as decimals, we need to convert the fractions to fractions with denominators of 10, 100, or 1000.
224 7/10 already has a denominator of 10; this makes it 224.7.
For 87 24/25, we can multiply the denominator by 4 to make 100. Doing that means we need to multiply the numerator by 4 as well:
87 (24*4)/(25*4) = 87 96/100 = 87.96
For 686 49/50, we can multiply the denominator by 2 to make 100. Doing that means we need to multiply the numerator by 2 as well:
686 (49*2)/(50*2) = 686 98/100 = 686.98
A.
2 • 2 • 2 • 3
B.
2 • 2 • 3 • 3
C.
2 • 2 • 9 • 1
D.
2 • 3 • 3 • 3
16×1+4(18÷2-9)
16×1+4(9-9)
16×1+4(0)
16×1
16
The angles should at 144°
A decagon is a 2D shape, or polygon that has 10 straight sides, 10 vertices (points), and 10 interior angles.
Given that, A 2-inch-wide frame is to be built around the regular decagonal window
External angles add up to 360
so each external angle = 360/10 = 36 degrees
internal angle = 180 - 36 = 144 degrees
Hence, angles at the corners are 144 degrees
For more references on decagon, click;
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