The oak tree outside of Brian's house
casts a 12-foot shadow at a certain time of 1
day. At the same time. Brian, who is 6 feet
tall, casts a 2-foot shadow. How tall is the
tree?

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

the answer is b.

64

step-by-step explanation:

c=2πr=2·π·8≈64

the furthest the dog can be is 508 meters away from the house, and the closest he can be is 492 meters away from the house.