How much of the circle is clear ? 1/2 of it and 1/9 of it.
How much of it is (1/2 + 1/9) ?
Before you can add fractions, they need to have the same denominator.
The least common multiple of 2 and 9 is 18, so that's a good choice.
1/2 = 9/18
1/9 = 2/18
(1/2 + 1/9) = (9/18 + 2/18) = 11/18 . That's how much of the circle is NOT shaded.
Since 11/18 of it is NOT shaded, the remaining 7/18 of it is shaded.
Answer:
B
Step-by-step explanation:
These angles add up to 180°.
(2x + 2) + (x + 34) = 180° = 3x + 36
3x = (180 - 36)° = 144°
x = (144/3)° = 48°
Step-by-step explanation:
b is per the identity of angles on parallel lines when intersected by one inclined line the same as the 40° angle.
so,
b = 40°
due to the parallel nature of the 2 lines there is a symmetry effect for such shapes inscribed a circle. the upper and the lower triangle must be similar. and when applying a vertical line through the central crossing point, everything to the left is mirrored by everything on the right.
so, angle c must be equal to angle b.
c = 40°
and as the sum of all angles in a triangle is always 180°, d is then
d = 180 - 40 - 40 = 100°
the interior angle of the arc angle a is the supplementary angle of d (together they are 180°), because together with d they cover the full down side of the top-left to bottom-right line.
interior angle to a = 180 - 100 = 80°
due to the symmetry again, the arc angle opposite to a is the same as a.
as we know, the interior angle to a pair of opposing arc angles is the mean value of the 2 angles.
so, we have
(a + a)/2 = 80
2a/2 = 80
a = 80°
there might (and actually should) be some more direct approaches for "a" out of the other pieces of information, but that was the most straight one right out of my mind, and I don't spend time on finding additional shortcuts, when I have already a working approach.
Answer:
Square length of 5cm
Step-by-step explanation:
Given
Required
Determine the possible measure of square from the rectangular sheet
To do this, we simply calculate the greatest common factor (GCF) of the dimension of the rectangle.
The common factor is: 5
<em>Hence, the side length of the square is 5cm</em>
