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Nat2105 [25]
2 years ago
11

Can someone help me calculate angles? P3

Mathematics
2 answers:
just olya [345]2 years ago
4 0

Answer:

the little box would indicate that it is a 90 degree angle.

storchak [24]2 years ago
4 0

Answer: 50

Step-by-step explanation: to find CXF all you need to do is 90-40

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ratelena [41]

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3 years ago
Find the surface area of a right cone with diameter 30 in. and slant height 8 in.Your answerEXTRA CREDIT: Find the surface area
Anon25 [30]

<u>Answer:</u>

Surface area = 1084 in²

<u>Step-by-step explanation:</u>

To find the surface area of a right cone, we can use the following formula:

\boxed{{Area = \pi r^2 + \pi rl}},

where:

• r = radius

• l = slant height.

In the question, we are told that the diameter of the cone is 30 in. Therefore its radius is (30 ÷ 2 = ) 15 in. We are also told that its height is 8 in.

Using this information and the formula above, we can calculate the surface area of the cone:

Surface area = \pi \times (15)^2 + \pi \times 15 \times 8

                     = 345 \pi

                     \approx 1084 in²

6 0
1 year ago
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