question_answer

A piece of wire is used to make rectangles with the same height of 'h' cm. The lengths of the rectangles are increased by 1 cm successively. Find the total length of wire required to make 7 rectangles in this pattern.

A)  \[\text{2 }\!\![\!\!\text{ h }+\text{ b }+\text{ 7 }\!\!]\!\!\text{ }\]   

B)         2b + h + 7

C)  2n + h + 6           

D)         \[\text{2 }\!\![\!\!\text{ b }+\text{ h }+\text{ 6 }\!\!]\!\!\text{ }\]