Question

solve the following questions 2and3 properly no spamming at all​

Answer 1

$(2) Length=16.5 m\\Perimeter=51.8\\Perimeter = 2(l+b)\\51.8=2(16.5+b)\\16.5+b=25.9\\b=25.9-16.5=9.4m\\Area=l*b\\Area=16.5*9.4\\Area=155.1m^2$

$(3) Breadth=7.4m\\Perimeter=42m\\Perimeter=2(l+b)\\42=2(l+7.4)\\l+7.4=21\\l=21-7.4=13.6m\\Area=l*b\\Area=13.6*7.4\\Area=100.64m^2$

Answer 2

Answer:

2. Breadth = 9.4 m

Area = 155.1 m²

3. Length = 13.6 m

Area = 100.64 m²

Step-by-step explanation:

Given:

2. Perimeter of rectangle = 51.8 m

Length = 16.5 m

3. Perimeter of rectangle = 42 m

Breadth = 7.4 m

To find:

2. Breadth, Area of rectangle

3. Length, Area of rectangle

Solution:

2. As we know,

Perimeter of rectangle = 2(length + breadth)

Or, 51.8 m = 2(16.5 m + breadth)

Or, 25.9 m = 16.5 m + breadth

Or, 25.9 m - 16.5 m = breadth

Or, 9.4 m = breadth

Hence the required Breadth is 9.4 m

$\therefore$ Area = length × breadth

= 16.5 × 9.4 m²

= 155.1 m²

Hence the required Area is 155.1 m²

_______________________________________

3. As we know,

Perimeter of rectangle = 2(length × breadth)

Or, 42 m = 2(length + 7.4 m)

Or, 21 m = length + 7.4 m

Or, 21 m - 7.4 m = length

Or, 13.6 m = length

Hence the required length is 13.6 m

$\therefore$ Area = length × breadth

= 13.6 × 7.4 m²

= 100.64 m²

Hence the required Area is 100.64 m².