Find the perimeter and the area of the square whose side is 8 cm

The area of a rectangular shaped photo is 820 sq. cm. and its width is 20 cm. What is its length? Also find its perimeter

The scalene triangle has 40 cm as its perimeter and whose two sides are 13 cm and 15 cm, find the third side

A square of side 2 cm is joined with a rectangle of length 15 cm and breadth 10 cm. Find the perimeter of the combined shape.

(i) Find the breadth of the rectangle with perimeter 14m and length 4m
(ii) The perimeter of an isosceles triangle is 21 cm. Find the measure of equal sides given that the third side is 5 cm.