Question

9 which of the following is the perimeter of a parallelogram with length of 13 cm and width of 4 cm after the dimensions are tripled? 102 cm 52 cm 104 cm 34 cm skip 8/12 complete

Explanation:

Step1: Find new length and width

The original length is 13 cm and width is 4 cm. After tripling, new length $l = 13\times3=39$ cm and new width $w = 4\times3 = 12$ cm.

Step2: Use perimeter formula for parallelogram

The perimeter formula of a parallelogram is $P = 2(l + w)$. Substitute $l = 39$ cm and $w = 12$ cm into the formula: $P=2(39 + 12)=2\times51 = 102$ cm.

Answer:

102 cm