Question

A rectangular room, / m long and b m wide,

Answer 1

The perimeter of the given rectangular room is found as -

Part a: p = 11 m.

Part b: p = 46 m.

Explain the term perimeter of rectangle?

• A rectangle's perimeter (P) is the sum of the lengths of its four sides.
• A rectangle has equal size lengths plus two equal widths since its opposite sides are equal.

As, given in the question-

The rectangular room has-

l m long and b m wide,

perimeter p, where p = 2l+2b  ...eq 1

Part a: perimeter of a room for, 3.5 m long and 2 m wide.

Put l = 3.5  and b = 2 in  eq 1.

p = 2l+2b

p = 2(3.5) +2(2)

p = 7 + 4

p = 11 m.

Part b: perimeter of a room for, 20 m long and 3 m wide.

Put l = 20  and b = 3 in  eq 1.

p = 2(20) +2(3)

p = 40 + 6

p = 46 m.

Thus, the perimeter of the given rectangular room is found as 46m.

To know more about the perimeter of rectangle, here

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