Answer:
31.5
Step-by-step explanation:
You need to first use the formula of calculating surface area of a cuboid
SA=2(lw+lh+wh)
now you put the values in as
H=3
W=1.5
L=2.5
You get 31.5
Hope this Helps!
Answer: 1/14 in simplest form
Y=4x-7 think this is the answer
Answer:
-¹²/₅
Step-by-step explanation:
Let cos a = -⁵/₁₃
Then tan a = sin a/cos a
= [√(1 - cos²a)]/cos a
= {√[1 - (-⁵/₁₃)²]}/(-⁵/₁₃)
= -[√(1 - ²⁵/₁₆₉)] × ¹³/₅
= -[(√(¹⁴⁴/₁₆₉ )] × ¹³/₅
= -¹²/₁₃ × ¹³/₅
= -¹²/₅
tan(arccos (-⁵/₁₃)) = -¹²/₅
The diagram shows the 2nd quadrant of a circle with radius 13, cos a = -⁵/₁₃, and tan a = ¹²/₍₋₅₎ = -¹²/₅.
I hope this helps, i got it from a cheat sheet online