Answer:
Step-by-step explanation:
where is the pic of the problem
D is the correct answer because in the description it doesn't say that any of the students dislike a type of ice cream, just that they don't prefer it.
The area of each triangular face is
.. A = (1/2)*b*h
.. Aside = (1/2)*(6 cm)*(5 cm) = 15 cm^2
The area of the triangular base is
.. Abase = ((√3)/4)*s^2 = (√3)/4*(6 cm)^2 = 9√3 cm^2
The total surface area is the base area plus the area of the three sides.
.. Atotal = Abase + 3*Aside
.. = 9√3 cm^2 +3*15 cm^2
.. = (45 +9√3) cm^2
.. ≈ 60.6 cm^2
Actually, there's an error in the picture. The height of the side should be 4, and the length of the edge should be 5. Making that adjustment, the total area is 51.6 cm^2.
It is hard to tell what is intended. Not all answers are showing, so we can't "reverse-engineer" the problem from the answers.
Answer:
see below
Step-by-step explanation:
(7y +9 )(7y +9 ) or (7y+9)^2 you ALMOST had it...just missed the parentheses !
Using the Pythagorean theorem, we can calculate the apothem of the pentagon.
We have then:
Then, the area of the pentagon is given by:
Where,
L: side of the pentagon
a: apotema
Substituting values:
Rounding the nearest whole we have:
Answer:
the approximate area of the regular pentagon is: