Question

. The area of rectangle is 150sq.cm. if one of its side is 10cm. what is the length of its other sides? Also find the perimeter of the rectangle.​

Answer 1

Answer:

Let

the shorter side of triangle =x cmThe other side of the triangle =(x+5)cmThe area of reactangle(x+5)(x)=150⇒ x 2 +5x−150=0⇒ (x+15)(x−10)=0⇒ either x=−15 or x=+10Since the side cannot be negativeTherefore the value of c=−15 is negligible

the shorter side of triangle =x cmThe other side of the triangle =(x+5)cmThe area of reactangle(x+5)(x)=150⇒ x 2 +5x−150=0⇒ (x+15)(x−10)=0⇒ either x=−15 or x=+10Since the side cannot be negativeTherefore the value of c=−15 is negligibleWhen x=10cm, then the other side =10+5=15cm

Step-by-step explanation:

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Answer 2

$\sf \Large Solution!!$

Area = Length × Breadth

150 cm² = Length × 10 cm

Length = 150 cm² ÷ 10 cm

Length = 15 cm

Perimeter = 2(Length + Breadth)

Perimeter = 2(15 cm + 10 cm)

Perimeter = 2(25 cm)

Perimeter = 50 cm