Question

can you tell me the answer ​

Answer 1

Answer:

214.5

Step-by-step explanation:

area of triangle = 1/2x base x hight

220 = 1/2 x base x 11

220 = 5.5 x base

220 - 5.5 = base

214.5 cm

Answer 2

Question :

Find the base of triangle whose area is 220 cm² and height is 11 cm.

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Answer :

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Given :

• Area of triangle = 220 cm²
• Height of triangle = 11 cm

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To Find :

• Base of triangle = ?

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Solution :

First of all we are given Area and height of triangle. To find base, we have a formula :

$\large \underline{\boxed{\bf{Area_{(triangle)} = \dfrac{1}{2} \times Base \times Height }}}$

So, by filling values :

• Area = 220 cm²
• Height = 11 cm

$\sf : \implies 220 \: cm^{2} = \dfrac{1}{2} \times Base \times 11 \: cm$

$\sf : \implies \dfrac{220 \: cm^{2}}{11 \: cm}= \dfrac{1}{2} \times Base$

$\sf : \implies \cancel{\dfrac{220 \: cm^{2}}{11 \: cm}} = \dfrac{1}{2} \times Base$

$\sf : \implies 20 \: cm = \dfrac{1}{2} \times Base$

$\sf : \implies 20 \: cm \times 2 = Base$

$\sf : \implies 40 \: cm = Base$

$\sf : \implies Base = 40 \: cm$

$\Large \underline{\boxed{\bf{Base = 40 \: cm }}}$

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Hence, base of triangle is 40 cm.