Question

Find the perimeter of a rectangle whose length is 15 cm and length of one diagonal is 17cm

Answer 1

46 cm

Explanation:

first ,we use the Pythagorean theorem to determine the width:

width = √(17^2-15^2) = 8

then

perimeter = 2(width+lengt) = 2(8 + 15) = 2×23 = 46