Answer:
Step-by-step explanation:
Given that,
The diameter of a cone, d = 7 inches
Radius, r = 3.5 inches
The slant height of the cone, l = 10 inches
We need to find the lateral surface area of a cone. The formula for the lateral surface area of a cone is given by :
Substitute all the values,
So, the lateral surface area of the cone is .
Answer:
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Step-by-step explanation:
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4x + 5x - 30 = 180
9x - 30 = 180
9x = 210
x = 23 1/3
Answer: 10x + 20
Step-by-step explanation:
10 (x + 2)
Distribute
10x + 20
Answer:
12:15
16:20
Step-by-step explanation:
Note that what you multiply to one side, you multiply to the other (same with dividing) for ratios.
4:5 => 4 * 3: 5 * 3 = 12:15
4:5 => 4 * 4: 5 * 4 = 16:20
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