A 3 ft tree casts a 10 ft. shadow. How many feet long is the shadow of a 26 ft tall tree at the same time? If necessary, round to the nearest tenth.

8 feet

Step-by-step explanation:

It is given that, a 3 ft tree casts a 10 ft. shadow.  It means that 1 ft long shadow will cast by feet long tree.

Let 26 ft tall tree will cast x feet long shadow. To find it using unitary method we get :

or

x = 8 feet

So, 8 feet long is the shadow of a 26 feet tall tree.

17 1/3

step-by-step explanation:

the answer is b.

step-by-step explanation: