Answer:
<h3>
A. A = 66π cm² ≈ 207.35 cm²</h3><h3>
B. No, will not. {will be less than double}</h3><h3>
C. No, will not. {will be more than double}</h3>
Step-by-step explanation:
<h3>
A.</h3>
h = 8 cm, r = 3 cm
A = 2×πr² + 2πr×h = 2πr×(r + h)
A = 2π×3×(3 + 8) = 66π cm² ≈ 207.35 cm²
<h3>
B.</h3>
h = 2×8 = 16 cm , r = 3 cm , 2×66π = 132π cm²
A = 2π×3×(3 + 16) = 114π cm² ≠ 132π cm²
<h3>
C.</h3>
h = 8 cm , r = 2×3 = 6 cm , 2×66π = 132π cm²
A = 2π×6×(6 + 8) = 168π cm² ≠ 132π cm²
Answer:
x=21
y=45
z=101
Step-by-step explanation:
Angles crossing each other are congruent
86=4x+2
84=4x
x=21
Quadrilateral has 360 degrees
86 + 86 + 2y+4 + z-7 = 360
172 + 2y+4 + z-7 = 360
2y+4=94
2y=90
y=45
z-7=94
z=101
mark brainliest please!
Answer:
x=54
Step-by-step explanation:
these two angles are supplementary to each other. this is because alternate interior angles are congruent, and 2x+42 degrees is supplementary to the alternate interior angle of x-24 degrees. so, we can add these two numbers up and set it equal to 180.
2x+42+x-24=180
3x+18=180
3x=162
x=54
if this question is asking for x, 54 is the answer. if it is asking for the angle measures, plug in 54 for x for each angle and solve.
the answers are
the bases are congruent,
the volume of the first solid is twice as much as the volume of the second solid,
and
if the dimensions of the second solid are x by x by h, the first solid has 4xh more surface area than the second solid
(I just did this assignment)
