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The length of the longest side of a right-angled triangle is 13 cm. if the height of the triangle is 5 cm what is the area of the triangle in square centimeters?

Class: KCPE

Subject: Mathematics

Topic: Length,perimeter and area

Lesson Summary

The length of the longest side of a right-angled triangle is 13 cm. if the height of the triangle is 5 cm what is the area of the triangle in square centimeters?

A.12
B.156
C.60
D.30



Text Answer


Let the base of the triangle be x cm as shown in the figure below.
Using Pythagoras relation we have
q122132019759.png

The correct answer is D (30 cm2)

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