What is the surface area of the figure below?
1 answer:
You might be interested in
Answer: 6 years
Step-by-step explanation:
Formula to calculate compound amount: , where P= Principal , r=rate of interest, t= time
Given: P = £400, r = 3% = 0.03 , A= 475
Required equation:
Taking log on both sides , we get
Hence, he needs to invest the money for 6 years to get atleast £475.
Calculate the hypotenuse( h ) using Pythagoras' identity
h =√(4² + 7²) = √(16 + 49) = √65
sinΘ = 4 / √65 ⇒ cscθ = √65 / 4
cosθ = 7/ √65 ⇒ secθ = √65 / 7
tanθ = ⇒ cotθ =