Given that point of intersection is at half of the height, by similarity of triangles, the radius is half of
The the area is Pi*r^2 = Pi*(3in)^2 = Pi*9 in^2 = 9Piin^2
Divide both sides by 3:
|4x + 6| = 8
Now remove the absolute value:
4x + 6 = 8
or
4x + 6 = -8
Subtract both sides by 6:
4x = 2
or
4x = -14
Divide both sides by 4:
x = 1/2
or
x = -7/2
Final answer: x = 1/2 or x = -7/2
Just multiply:
5 cm*(4 cm)*(1.5 cm) = 30 cm^3
The formula of the volume is area of the base by the height.
3(b+6) = 3*b + 3*6 = 3b + 18
For number 4 change 3/4 to 6/8 and just add them. It will turn out to be 31/8
