Answer:
Step-by-step explanation:
The solution of each question is self-explanatory.
<u>Used properties</u>
- Vertical angles are congruent
- Angle sum property of circle
- Central angle is same as intercepted arc measure
<h3>#8</h3>
- mED = mAB = mAC - mBC = 90° - 52° = 38°
<h3>#9</h3>
- mEA = mBCD = mBC + mCD = 52° + 90° = 142°
<h3>#10</h3>
- mBDC = 360° - mBC = 360° - 52° = 308°
Not sure what you mean by solve for r^2
but
a/4=r^2
if u wanna go further
r=(a/4)^1/2
A-Step 1 Multiply 18.9 × 3.
Step 3. Add 18.9 from the product. is the right answer. Why?
This week the distance travelled was 3x 18.9 father than last week, it means
18.9x3 + 18.9=75.6
The floor of the school has the shape of triangle.
So, the area of the floor is equal to the area of that triangle with base = 26 in, and height = 33 in.
The area of triangle = 0.5 * base * height
= 0.5 * 26 * 33 = 429 in²
∴ The area of the floor = 429 in²
