Question

4. Find the base of a triangle whose area is 90 cm and height 12 cm.


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Answer 1

Step-by-step explanation:

• Hence the base of the triangle is 15cm

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Answer 2

$area \: of \: triangle =\frac{1}{2} \times b \times h$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 90 =\frac{1}{2}\times b \times 12$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{90}{12} =\frac{1}{2}\times b$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \frac{45}{6} = \frac{1}{2}\times b$

$\: \: \: \: \: \: \: \: \: \: \: \:\: \: \: \: \: \:\: \frac{15}{2}\times\frac{2}{1} = b$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: 15\:cm= b$

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