Question

Length 21cm area 315cm2 find the breath ​

Answer 1

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Symbols of:

$\quad\quad\quad\quad\tt{A = A rea}$

$\quad\quad\quad\quad\tt{ l = length}$

$\quad\quad\quad\quad\tt{ b \: = breadth}$

Given that:

$\quad\quad\quad\quad\tt{A = 315 {cm}^{2} }$

$\quad\quad\quad\quad\tt{l = 21cm}$

$\quad\quad\quad\quad\tt{b = \: ? }$

Formula for breadth (b):

$\quad\quad\quad\quad\tt{breadth = \frac{Area}{length} }$

Solution:

$\quad\quad\quad\quad\tt{b = \frac{315 {cm}^{2} }{21cm} }$

$\quad\quad\quad\tt{\:\:b = {15cm}}$

So, the breadth (b) is:

$\quad\quad\quad\quad\tt \boxed{ \boxed{ \color{magenta}{b = 15cm }}}$

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✍︎ C.Rose❀

Answer 2

Answer:

Breadth = 15 cm

Step-by-step explanation:

Area = length x breadth

315 = 21 x breadth

$\frac{315}{21} = \frac{21}{21} \times breadth$                 [ dividing both sides by 21 ]

$15 = 1 \times breadth\\\\breadth = 15 \ cm$