A ladder that is 21 feet long is propped against a building. The bottom of the ladder was placed 4 feet from the base of the building. How high up on the building does the ladder reach? Round the answer to the nearest tenth of a foot.

One latest education question and answer asked over students to state what they think is the most crucial important concern for a student to do in order to accomplished success. Of the many responses, the one which that stood out was practice. Persons who are certainly successful do not become successful by being born. They work hard and determination their lives to succeeding. This is how you can reach your goals. following are one of the answer and question example that you will be able to utilize to practice and enhance your practical knowledge and also give you insights that might just help you to sustain your study in school.

Question:

A ladder that is 21 feet long is propped against a building. The bottom of the ladder was placed 4 feet from the base of the building. How high up on the building does the ladder reach? Round the answer to the nearest tenth of a foot.a.4.1 feet
b.17.0 feet
c.20.6 feet
d.21.4 feet

Answer:

Answer:

c. 20.6 feet

Step-by-step explanation:

Ok, take at look at the picture I attached you. As you can see, the length of the ladder, the distance from the floor to the top of the ladder and the distance from the building to the base of the ladder, together, form a  right-angled triangle. So, in order to find how high up on the building does the ladder reach, we need to find the height h using Pythagorean Theorem:

Where:

So, let:

and we know:

Replacing the data in the equation:

Solving for h:

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They could simply hopefully help the student resolve the question by using the questions and answer examples. Then would probably carry out some sharing in a group discussion and also study with the classmate around the topic, so another student also has some enlightenment and still keeps up the school learning.

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