Answer:
48π + 120
Step-by-step explanation:
Lateral area of a cylinder = Ch = πdh
1/4 of the lateral area = 12π(10)/4 = 30π
Bottom area = 6(10) = 60
Front area = 6(10) = 60
Area of base = πr^2/4 = 36π/4 = 9π
Area of two bases = 18π
Total area = 18π + 30π + 60 + 60 = 48π + 120
Answer:
x=5 or -3
y=-3 or 5
(x,y) =(5,-3) , (-3,5)
Step-by-step explanation:
Suppose,
Those two numbers are respectively x & y .
now,
Two numbers multiplied together give -15
so, x . y = -15
∴y =-15/x .........(1)
They add together to give 2 .
so, x+y= 2
=> x+(-15/x) = 2 [From equation (1)]
=>x-15/x = 2
=>(x²-15)/x = 2
=>x²-15 = 2x [Multiply both sides by x]
=>x²-2x-15 = 0
=>x²-5x+3x-15 = 0
=>x(x-5)+3(x-5) = 0
=>(x-5) (x+3)=0
therefore,
x=5 or x=-3
If x=5,
y = -15/5 [From equation (1)]
∴<em>y= -3</em>
If x=-3,
y = -15/-3 [From equation (1)]
∴<em>y=5</em>
The first one x is greater than and equal to 34
Answer: 3 hours
Step-by-step explanation:
The span between -12.5 and -5 is 7.5. Divide that by 2.5 (since that’s the change) and that’ll give you the amount of time it takes.