Answer:
240 square meters
Step-by-step explanation:
The area of the base is the area of a square 10 m on a side:
base area = (10 m)^2 = 100 m^2
The lateral area is the area of 4 triangles, each of which is ...
triangle area = (1/2)bh = (1/2)(10 m)(7 m) = 35 m^2
So the total area is ...
base area + 4 · triangle area = total area = 100 m^2 + 4·35 m^2 = 240 m^2
Step-by-step explanation:
Divide 87 by 2 to represent how many chairs will be occupied.

43 1/2 chairs will be occupied, meaning that 43 chairs have 2 people, and one chair has 1 person.
The chair with one person is represented as the last chair.
-20 * 3 / -30 / 3
First multiply the top and divide the bottom to simplify the problem:
-20 * 3 = -60
-30/3 = -10
Now you have -60 / -10
Divide:
-60 / -10 = 6
I had the same question. I picked D
Last Question
Because this may not be the question you want, I'll omit the first step which should be done with latex. The key to all of these except C is to invert the second fraction (turn the second fraction upside down) and multiply.
A

=(6*-2) / (5*3) = - 12/15 = -4/5
B
= (7*5) / (4*3) = 35 / 12 = 2 11/12
C
Impossible to do 4/0 cannot be done.
D

= (-2*-4)/(3*5) =
8/15