Question

3) The perimeter of a rectangular book 630 cm?
and its length is 15 cm. find the breath
and area.3 please help me ​

Answer 1

Answer:

Let the breadth be x cm

A/Q, 2(L+B) = Perimeter

=> 2( 15 + B) = 630

=> 30+2B = 630

=> 2B = 630-30

=> B = 600/2

=> B = 300

Therefore , Breadth = 300

Area = L×B

= 15×300

= 4500

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Answer 2

$\huge\color{red}{\textbf{\textsf{question⇨}}}$=The perimeter of a rectangular book 630 cm?

and its length is 15 cm. find the breath

and area.3

$\huge\fbox \pink {A}\fbox \blue {n} \fbox\purple {S} \fbox \green{w} \fbox \red {E} \fbox \orange {r}}$

area= L×B= 630

area= L×15=630

L= 630/15 =42cm

perimeter= 2(L+B)

2(42+15)

2(57)=114cm