Abuilding is casting a 140 foot shadow at the same time a nearby post is casting a 10 ft shadow. if the post is 18 feet tall how tall is the building

252 feet tall

Step-by-step explanation:

1) make a proportion

x/18=140/10

2)solve

10x=140*18

x=140*18/10

x=14*18

x=252

3) Answer

The building is 252 feet tall

i do not know this sorry : (

in problems involving proportions, we can use cross products to test whether two ratios are equal and form a proportion. to find the cross products of a proportion, we multiply the outer terms, called the extremes, and the middle terms, called the means.

hope it