Question

Q. A classroom blackboard is 75 cm long and 12 cm wide Find the perimeter of the blackboard?​

Answer 1

Hope the attachment helps you...

Answer 2

Given :- A classroom blackboard is 75 cm long and 12 cm wide .

To Find :- The perimeter of the blackboard ?

Solution :-

we know that,

• Perimeter of rectangle = 2 * (Length + width)

since a blackboard is in the shape of a rectangle .

so,

→ Lenth of blackboard = 75cm

→ Width of blackboard = 12 cm

then,

→ Perimeter of blackboard = 2 * (Length + width) = 2(75 + 12) = 2 * 87 = 174 cm (Ans.)

Hence, the Perimeter of the blackboard is 174 cm .

Extra :- if asked area of the blackboard :-

→ Area of blackboard = Length * width = 75 * 12 = 900 cm² .

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