Answer:
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 [tex]\dfrac{3}{10}[/tex] feet long tree.
Let 26 ft tall tree will cast x feet long shadow. To find it using unitary method we get :
[tex]x=\dfrac{3}{10}\times 26\\\\x=7.8\ \text{feet}[/tex]
or
x = 8 feet
So, 8 feet long is the shadow of a 26 feet tall tree.
