Step-by-step explanation: Given that Danny has a triangular pyramid where all the four triangles are congruent. The height and base of one triangle are 6 inches and 5 inches respectively. We are to find the surface area of the pyramid.

The area of one triangle is given by

$A=\dfrac{1}{2}\times\textup{base}\times\textup{height}=\dfrac{1}{2}\times 5\times 6=15~\textup{sq. inches}.$

Since the pyramid consists of four congruent triangles, so the surface area of the pyramid will be

$S=4\times A=4\times 15=60~\textup{sq. inches}.$

Thus, the answer is 60 sq. inches.

8 0

3 years ago

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If f(x) = 3x - 5, than f(2) =

Mamont248 [21]

If we substitute 2 into x it'll be:

$3x - 5 \\ 3(2) - 5 \\ 6 - 5 \\ 1$

5 0

3 years ago

Elena says she needs 263 plastic sleeves for her comic book collection. She has comic books. Each sleeve holds 4 comic books. Do

mote1985 [20]

The answer would be no. She needs 264 plastic covers in order to fit all comic books.
Divide 1,056 by 4
You should get 264. <span />

7 0

3 years ago

Sherri has 23 pieces of jewelry to sell. She sells the bracelets for $2 and the necklaces for $3, and earns a total of $55. If t

Nutka1998 [239]

X + y = 23
2x + 3y = 55

3 0

3 years ago

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