Question

4. Find the area of a right-angled triangle with a base of 7 cm and a height of
8 cm.


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Answer 1

Answer:

the third side of this triangle is the adjacent side

By pythagoras theorem,

(8)^2 = (7)^2 + x^2

64=49+x^2

x^2= 64-49=25

x=5

area of the triangle = 1/2 × base × height

= 1/2 × 8 × 7

= 4×7

= 28 cm^2