Answer:
<em>The height of the cylinder 'h' = 12 inches</em>
Step-by-step explanation:
<u><em>Explanation:-</em></u>
Given Volume of the cylinder = 8,478 cubic inches
Radius of the cylinder = 15 inches
Volume of the cylinder is determined by
8,478 = 3.14 × (15)² h
<em>The height of the cylinder 'h' = 12 inches</em>
Answer:
27
Step-by-step explanation:
2x+3x+45=180
5x=135
x=27
<span>The arc length is 8</span>π.
The circumference of the circle is 2πr = 9<span>π.
</span>
so
cross-multiply: 9x = 360(8)
x = 320
12 Step-by-step explanation:cause 6x2 = 12
Answer:
A. 754 cm²
Step-by-step explanation:
Amount of cardboard needed = surface area of the cone
Curved surface area of the cone = πrl
Where,
π = 3.14
r = ½(20) = 10 cm
l = 24 cm
Plug in the values into the formula
Curved surface area = 3.14 × 10 × 24 = 753.6 ≈ 754 cm²