A right angle is 90 degrees
So you 90/4=22.5
Then 90+22.5=112.5
Hope this helped!
Answer:
The term 2lw is independent of the height
Step-by-step explanation:
This formula is usually obtained reasoning like this: the rectangular prism has 6 faces, thus the surface area is the sum of the areas of these faces.
2 faces are l×w rectangles, so their area is lw+lw=2lw. Note that we are not using the height to compute the area, then this is the independent term.
The 4 remaining rectangles involve the height as one of their dimensions, so their areas (2hw+2lh) depend on the height.
By the base is regular they mean it as all sides are 4m long
Answer:
B
Step-by-step explanation:
49 ÷ 7 = 7
0.49 ÷ 0.7 = 7
0.049 ÷ 0.07 = 7
(sorry it's not very thorough, hope it helps)
edit: omg I put 3 instead of 7. oops
Answer:
A
Step-by-step explanation:
let r represent rate and d distance.
Given that r varies directly as d² then the equation relating them is
r = kd² ← k is the constant of variation
To find k use the condition r = 4 when d = 15, then
4 = k × 15² = 225k ( divide both sides by 225 )
k = 
r = d² ← equation of variation
When r = 9, then
9 = d² ( multiply both sides by 225 )
2025 = 4d² ( divide both sides by 4 )
506.25 = d² ( take the square root of both sides )
d = 
= 22.5 = 22 
→ A
