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14. The area of a rectangle is 650 cm" and its width is 13 cm. Find the perimeter of the
rectangle. Also, calculate its area if the length of the rectangle is 15% more than its
width.
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Answers
Step-by-step explanation:
Given,
area of rectangle is 650cm
width of the rectangle is 13 cm
Here we can find length -
area of rectangle = length *breadth
650 = length * 13
650/13 = length
50 = length
perimeter of the rectangle = 2*(length + breadth)
= 2 ( 50+13)
=2(63)
=126
Answer:
The perimeter is 126 cm. The new area is 194.35 cm²
Step-by-step explanation:
area of a rectangle = 650 cm
width = 13 cm
length = ?
As we know,
area of rectangle = lenght × breadth
→ 650 = length × 13
→ length = 650/13
→ length = 50 cm
perimeter = 2(lenght + breadth)
= 2(50 + 13)
= 2 × 63
= 126
perimeter = 126 cm
according to que
if lenght is 15% more than breadth
i.e. length= (15/100) × 13
i.e. length = (15×13)/100
i.e. length = 1.95
therefore new length = 1.95 + 13
new length = 14.95 cm
new area = 14.95 × 13
new area = 194.35 cm²