Answer: Second option.
Step-by-step explanation:
The area of a rectangle can be calculated with the following formula:
Where "l" is the length and "w" is the width.
You can notice in the figure that there are two equal purple rectangles, two equal green rectangles and two equal pink rectangles.
Knowing that each square of the grid has a side lenght of 1 centimeter:
1. The area of one purple rectangle is:
2. The area of one green rectangle is:
3. The area of one pink rectangle is:
Therefore, in order to find the surface area of the rectangular prism, you can multiply each area calculated before by 2 and then you must add the products.
Then, you get that this is:
Answer:
250 minutes
Step-by-step explanation:
10 + 0.12x = 15 + 0.10x
0.02x + 10 = 15
0.02x = 5
x = 250
Your welcome!
Kayden Kohl
8th Grade Student
Answer:
∠a = 42.5°
∠b = 87°
∠c = 174°
∠d = 90°
∠f = 131°
Step-by-step explanation:
∠a = 85°/2 = 42.5°
∠b = 360° -110° - 76° = 174°/2 = 87°
∠c = 360° -110° - 76° = 174°
∠d = 90°
∠f = 360° - 101° - (64° x 2) = 131°
Answer:
x = -3
Step-by-step explanation:
In an equation our aim is to find the value of what we are looking for as well as keeping the equation balanced. For example if we took away 1.4 only from one side then the equation would change so it's an important rule to keep in mind when solving equations, that you need to keep both sides of the equation the same.
0.7x - 1.4 = -3.5
→ First multiply everything by 10 to make everything into a whole number
7x - 14 = -35
→ Plus 14 to both sides to isolate 7x
7x = -21
→ Divide both sides by 7 to isolate 7
x = -3
It is a semicircle so you'd use this formula for the area:
πr² / 2
Then substitute 2 into r and solve (2 because it's the radius, 4 is the diameter)
You would use this formula for the perimeter:
(πd / 2) + d
or
πr + 2r
Then substitute 4 into d / 2 into r and solve.
Hope I helped :)