Answer:
24 cm
Step-by-step explanation:
The altitude from the centre to the chord is 5 cm and bisects the chord.
The radius of the circle is 26 cm ÷ 2 = 13 cm
There is a right triangle formed with legs 5 and x ( x is half the chord )
The hypotenuse is the radius, then using Pythagoras' identity
x² + 5² = 13²
x² + 25 = 169 ( subtract 25 from both sides )
x² = 144 ( take the square root of both sides )
x = = 12
Then
length of chord = 2x = 2 × 12 = 24 cm
Answer:
In the three days the Amazon stock share rose by
Step-by-step explanation:
Given:
Amazon stock share
rose 4 and 1/2 points on Wednesday
rose 3 and 3/8 points on Thursday
fell 2 and 1/4 points on Friday
To find the overall change.
Solution:
<em>The change in share on Wednesday is given as = </em>
<em>The change in share on Thursday is given as = </em>
<em>The change in share on Friday is given as = </em>
Thus, the over all change is given by:
<em>In order to combine mixed numbers, we will work the whole numbers and the fractions separately.</em>
⇒
⇒
To combine fractions, we will take least common denominator.
<em>The L.C.D. 2,4 and 8 = 8 as it is the least common multiple for all the denominators</em>
So, we multiply the numerators with the corresponding numbers to make the denominators common.
⇒
⇒
Combining the numerators.
⇒
⇒
⇒
The overall change for the three days can be given as :
This means the share rose by