Question

Grace uses 58 cm of a string to form a rectangle. If the length of the rectangle formed is 19 cm, what is its breadth?


a.
30 cm


b.
12 cm


c.
21 cm


d.
10 cm

Answer 1

Answer:

hey mate ur answer is 10 cm

Step-by-step explanation:

we know that

string used is equal to perimeter of rectangle, so

2(l+b) =58 cm

(l+b) = 29 cm

l=19 cm given

so,

b= 29-19

=10 cm

I hope it will help u

Answer 2

◐ Given :

• Grace uses 58 cm of a string to form a rectangle. If the length of the rectangle formed is 19 cm

◐ To find :

• Breadth of the rectangle

◐ Solution :

$\\{\blue\bigstar}{\underline{\boxed{\bf{\red{String\:used\:to\:form\:a\: rectangle=Perimeter_{(rectangle)}}}}}}$

${\large\pink\dagger}\sf{Perimeter\:of\: rectangle=58cm}$

${\large\pink\dagger}\sf{Length\:of\: rectangle=19cm}$

$\\\qquad\large\mathfrak{\underline{According\:to\:the\:question}}$

$\\\quad{\sf{\purple{Perimeter_{(rectangle)}=2(length+breadth)}}}$

• Substitute the values

$\\\implies\sf 58 = 2(19+b)$

$\implies\sf \dfrac{58}{2}=19 + b$

$\implies\sf 29=19+b$

$\implies\sf 29-19=b$

$\implies\sf b=10cm$

$\therefore{\underline{\sf{Breadth\:of\:a\:rectangle\:is\: \bf 10cm}}}$

• (d) is the correct option

________________________________