Question

What is the perimeter of rectangle with 17 cm length
and is 15cm breadth.


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Answer 1

Answer:

64cm

Step-by-step explanation:

length=17cm

breadth=15cm

Perimeter of rectangle = 2(l+b)

=2(17+15)

=64cm

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Answer 2

$\bf{\;\;\blue{Given :}}$

Length = 17 cm

Breadth = 15 cm

$\bf{\;\;\green{To \: find :}}$

• Perimeter of rectangle

$\bf{\;\;\red{Solution :}}$

L = 15

H = 17

L² + B² = H²

$\bf{\;\;\blue{ =) \: (15) {}^{2} + B {}^{2} = (17) {}^{2} }}$

$\bf{\;\;\blue{ =) \: 225 +B {}^{2} = 289 }}$

$\;\;\bf{\;\;\red{ =) \: B {}^{2} = 289 - 225}}$

$\;\;\bf{\;\;\red{ = ) \: B {}^{2} = 64}}$

$\;\;\bf{\;\;\green{ = ) \: B = \sqrt{64} }}$

$\;\;\bf{\;\;\green{ = ) \: B = 8 \: cm}}$

Breadth = 8 cm

Area of rectangle = L × B = 15 × 8 = 120m²

$\sf Perimeter \: of \: rectangle \: = 2 ( L + B )$

$\sf = 2 ( 15 + 8 ) \\ \sf= 2 ( 23 ) \\ \sf= 46 cm$

Hence , the answer is 46 cm .