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In triangle ABC, AC = 15 cm and AB = 10 cm . The angle at B is a right angle Calculate the length of BC. Give your answer correct to one decimal place.

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Use the Pythagorean Theorem since triangle ABC is a right triangle.

Pythagorean Theorem: a^2+b^2=c^3.

Substitute the 2 side lengths in and find the 3rd side length:

15^2+10^2=c^2.

225+100=c^2 by exponents.

325=c^2 by addition.

18.027=C by Square Root P.O.E.

C=18.027 by Symmetric P.O.E

The 3rd length is 18.027 or Square root of 36.
Jennet1635

Answer:

11.1 cm

Step-by-step explanation:

draw the triangle with a base length as 10cm and mark a 15cm with the compass on the mark A and also draw a straight line forming a right angle at B and connect the two lines with another straight line at which the vertex is C. at last measure the line.

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