Question

Perimeter of a rectangleis 42 cm and its area is 20cm2. a) What is the sum of length and breadth? b) Find length and breadth?​

Answer 1

Answer:

Perimeter of any rectangular shaped thing = 2(length + breadth

Here,

Perimeter of Rectangle = 42m

Breadth of Rectangle = 7.4m

Applying formula,

➡ 42 m = 2( 7.4 + length )

\begin{gathered} = > ( \frac{42}{2} ) \: m = 7. 4 + length \\ \\ \\ = > 21 = 7.4 + length \: \\ \\ \\ = > 21 - 7.4 = length \\ \\ \\ = > \boxed{ \bold{13.6m \: = length}}\end{gathered}=>(242)m=7.4+length=>21=7.4+length=>21−7.4=length=>13.6m=length

Area of Rectangular shaped body = length × Breadth

So,

Area of this Rectangle = 13.6 m × 7.4 m

Area of this Rectangle = 100.64 m²

Hope it helps you

Step-by-step explanation:

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