Angles in triangle add to 180 degrees
20x=180
x=9
Angle ABC is the top one
8x9=72
Answer:
Step-by-step explanation:
v=4pi*r^3/3=3052.08
4*3.14/3*r^3=3052.08
4.2*r^3=3052.08
r^3=3052.08/4.2=726.7
so r ≈9
Answer:
1254.24
Step-by-step explanation:
Total area = sum of area of half circles and square
Area of square = 576
Area of half circles = 216π
So total area 576 + 216π
It says use 3.14 for π
So we get total area = 576 + 216(3.14)
==> multiply 216 and 3.14
total area = 576 + 678.24
==> add 576 and 678.24
total area = 1254.24
