Well, you could tackle the rectangle first; it doesn't really matter what order you go in, as long as you get the final answer.
1) I'll start with the rectangle. Area=base x height, so 10*4=40
2) The top triangle will go next. Area=(base x height) divided by two. 4*10=40
40/2=20
3) Bottom triangle. 3*10=30
30/2=15
4) Add all areas together: 40+20+15=75
The total area is 75cm².
Hope this helps!
No, it follows a pattern.
Step-by-step explanation:
Answer:
Associative Property of Multiplication
[ 3(5) (4) = (3) 5(4)]
Identity Property of Multiplication
5(1) = 5
Identity Property of Addition
(3 + 5) + 0 = (3+5)
Commutative Property of Addition
3 + 5 = 5 + 3
Associative Property of Addition
3 + (5 + 7) = (3 + 5) + 7
Step-by-step explanation:
The associative property states that you can re-group numbers and you will get the same answer and the commutative property states that you can move numbers around and still arrive at the same answer.
The identity property of 1 says that any number multiplied by 1 keeps its identity.
Hoped this helped!
We know that the side lengths of the square base are: x * x. The volume is 12, so for now, let's say that y is the other side length. Then, x * x * y = 12. We can solve for y: y = 12/x^2. Now, we find the surface area of the 5 sides.
Four of the sides have the same area: x * (12/x^2) = 12/x, so we multiply this by 4: 48/x.
The last side is the base: x * x = x^2.
We add 48/x to x^2:
x^2 + 48/x
So, the answer is the fourth choice, (d).
