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2 years ago

If you could explain to me how you get the answer, that will be great!

Mathematics

1 answer:

Otrada [13]2 years ago

7 0

Answer: 156

let me know if this is wrong

Step-by-step explanation:

first, find the surface area of the square base

6(6)=36

after that, find the surface area of the 4 triangular lateral faces

formula: SA=4(bh÷2)

then substitute

SA=4(6 x 10 ÷ 2)

solve

SA=4(30)

SA=120

add the surface area of the square base and the lateral faces

120+36=156

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3 years ago

Find the exact value of the given expression.<br> sin(2cos^-1(5/13))

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Step-by-step explanation:

let $cos^{-1}[\frac{5}{13} ] = \alpha$

where, alpha is some angle that satisfies the assumed condition.

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[ taking cos to the other side or applying cos on both sides]

now, substitute this in the given expression

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3 years ago

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Answer:

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2 years ago