Question

The perimeter of a rectangular sheet is 200cm. If its length is 70cm, find its

breadth and area.







EQUATION PLEASE!!!​

Answer 1

Answer:

perimeter of rectangle = 2(l+b)

200cm = 2(70cm+b)

200cm = 140cm + 2b

200-140 = 2b

60cm = 2b

b = 60/2

b = 30cm

Hence, breadth is 30cm

Answer 2

$\Large{\bf{\green{\mathfrak{\dag{\underline{\underline{Given:-}}}}}}}$

• Perimeter of rectangle = 200 cm.

• Length of the rectangle = 70 cm.

$\Large{\bf{\orange{\mathfrak{\dag{\underline{\underline{To \: Find:-}}}}}}}$

• Breadth of the rectangle

• Area of the rectangle

$\Large{\bf{\red{\mathfrak{\dag{\underline{\underline{Solution:-}}}}}}}$

First,

• Let the breadth of the rectangle be b.

Now,

Given,

• Length of the rectangle = 70 cm.

• Perimeter of the rectangle = 200 cm.

We know that,

$\boxed{\pink{\textsf{Perimeter of rectangle = 2(l + b) units}}}$

Substituting the values,

• 2(70 + b) = 200

• 70 + b = $\sf \dfrac{200}{2}$

• 70 + b = $\sf \cancel{\dfrac{200}{2}}$

• 70 + b = 100

• b = 100 - 70

• b = 30 cm.

Now,

We know that,

$\boxed{\pink{\sf Area\: of \:rectangle\: =\: lb \:units^2}}$

• Here,

• l = 70 cm

• b = 30 cm

Substituting the values,

• 70 * 30

• 2,100 cm.

Therefore,

• $\boxed{\purple{\textsf{Breadth of the rectangle = 30 cm.}}}$

• $\boxed{\blue{\sf Area\: of\: the\: rectangle\: = \:2,100 \:cm^2}}$

$\Large{\bf{\green{\mathfrak{\dag{\underline{\underline{Formulas \: used:-}}}}}}}$

Perimeter of rectangle = 2(l + b) units.

• where,

• l is length of rectangle

• b is breadth of rectangle

Area of rectangle = lb units²

• where,

• l is length of rectangle

• b is breadth of rectangle