Question

lenght is 1.5cm width is 10cm what is perimeter

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Answer 1

Answer:

23cm

Step-by-step explanation:

${\mathfrak{\fbox{\pink{Given,}}}}$

• length = 1.5cm
• breadth = 10cm

${\mathfrak{\fbox{\green{To \: find, }}}}$

• perimeter

${\fbox{\red{Formula \: Required,}}}$

• perimeter = 2(length + breadth)

From, the above info. We know that it is a rectangle.

${\large{\rm{\underline{\blue{Finding \: perimeter:}}}}}$

2(length + breadth) = perimeter

⇒2(1.5 + 10) = perimeter

⇒3+20 = perimeter

⇒23 = perimeter

.°. Perimeter of the rectangle = 23cm.

Answer 2

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$\large\sf{\underbrace{\underline{Understanding\ the\ question:-}}}$

$\leadsto$ ● From, the above information we know that it is a rectangle. In this question we are asked to find the perimeter of the rectangle whose length is 1.5cm and the breadth is 10cm.

So let's verify:-

$\large\sf{\underbrace{\underline{To\ find:-}}}$

$\leadsto$ $\sf{●\ In\ this\ question\ we\ have\ to\ find\ the\ perimeter\ of\ the\ rectangle.}$

$\large\sf{\underbrace{\underline{Given:-}}}$

$\leadsto$ $\sf{●\ Length\ =\ 1.5cm.}$

$\leadsto$ $\sf{●\ Breadth\ =\ 10cm.}$

$\large\sf{\underbrace{\underline{Formula\ to\ be\ used:-}}}$

$\leadsto$ $\sf{●\ Perimeter\ =\ 2(length\ +\ breadth)\ or\ 2(l\ +b)}$

$\sf{\underbrace{\underline{According\ to\ the\ question:-}}}$

$\leadsto$ $\sf{\qquad Perimeter\ =\ 2(length\ +\ breadth) \qquad}$

$\leadsto$ $\sf{\qquad Perimeter\ =\ 2(1.5\ +\ 10) \qquad}$

$\leadsto$ $\sf{\qquad Perimeter\ =\ 3\ +\ 20 \qquad}$

$\leadsto$ $\sf\pink{\qquad Perimeter\ =\ 23cm. \qquad}$

$\large\sf{\underbrace{\underline{Hence,}}}$

$\sf{Perimeter\ of\ the\ rectangle\ =\ 23cm.}$

$\large\sf{\underbrace{\underline{More\ to\ know:-}}}$

$\leadsto$ $\sf{Perimeter\ of\ square\ =\ 4\ ×\ side.}$

$\leadsto$ $\sf{Perimeter\ of\ parallelogram\ =\ 2(Base\ +\ Height).}$

$\leadsto$ $\sf{Perimeter\ of\ triangle\ =\ a\ +\ b\ +\ c.}$

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