Answer:
55%
Step-by-step explanation:
Since the perimeter of the square is 40, its side length is 40/4 = 10, so its area is 100.
To find the percentage of the shaded area, I am going to find the unshaded areas, which consist of 2 triangles.
The one on the left has lengths of 10(side length of the square) and 3(10-7), which means it has an area of 10*3/2 = 15.
The one on the right has lengths of 10(side length of the square) and 6(10-4), which means it has an area of 10*6/2 = 30.
That means the unshaded area is 15+30 = 45.
To find the shaded area, just subtract 45(unshaded area) from 100(area of square), which is 55 cm^2.
55 cm^2 is exactly 55% of 100, so the answer is 55%.
I hope this helped you.
Answer:
This mental multiplication trick uses the idea of a third number - a base number - to help us multiply two numbers in your head. This lesson looks at multiplying numbers near 10 using base 10. Fast Mental Multiplication Trick - Multiply in your head using base 20 and 30 How to multiply numbers near 20 and 30
Hope it helps
Answer:
use desmos. it is a really really helpful tool
Step-by-step explanation:
happy holidays and stay safe. I am also a math tutor if that is something you are interested in, lmk in the comments. (I am in algebra two)
Answer:
Since the kite is flying, the hypotenuse side of the triangle is 32.4m, while the adjacent side is unknown.
Given the opposite and hypotenuse, we use sine to find the angle.
θ= 34.4° (1 d.p.)
Thus, the angle the kite string makes with the ground is 34.4°.
Notes:
Answer:
0.3
Step-by-step explanation:
I just need 20 characters so yeah
