What is the surface area of this design?
A.76in2
B.280in2
C.360in2
D.392in2

392 in2 !

Step-by-step explanation:

HOPE U GET IT RIGHT !

There are 8 faces on the figure.

There are two of the same sides so we can multiply that by 2. That side equals 76 in. 76 x 2 = 152.

Then, there is another side that equals 4 x 4 which is 24.

Another side equals 4 x 6 which is 24.

Another one equals 6 x 6 which is 36.

Another side equals 6 x 6 which also equals 36.

Another side equals 10 x 6 which is 60.

The last side is 10 x 6 which equals 60.

Which should add up to 392 in.

Step-by-step explanation:

b

step-by-step explanation:

i dont know

7.9m and 4.3°

step-by-step explanation:

let east be +x and north be +y, x = distance * cos θ, y = distance * sin θ  

for 3.5 south, y = -3.5  

for 8.2, x = 8.2 * cos 30 and y = 8.2 * sin 30  

for 15 west, x = -15  

total x = 8.2 * cos 30 – 15 ≈ -7.9  

total y = -3.5 + 8.2 * sin 30 = 0.6  

magnitude = [(8.2 * cos 30 – 15)^2 + 0.6^2)]^0.5  

the magnitude is approximately 7.9 m  

tan θ = y/x = 0.6/-7.9  

the angle is approximately 4.3˚ north of west