The approximate height of the Qutub Minar in Delhi is:

The Qutub Minar in Mehrauli, Delhi, is about 72.5 metres (about 238 feet) high, which is usually rounded to 73 metres.

About the Qutub Minar:

• It is the tallest brick minaret in the world.
• It is a tapering tower with five storeys, each with a projecting balcony supported by stone brackets (muqarnas).
• The diameter is about 14.3 metres at the base and about 2.7 metres at the top.
• It has about 379 steps inside, leading to the top.
• The first three storeys are made of red sandstone; the fourth and fifth storeys are made of marble and sandstone.
• The surface is decorated with bands of carved inscriptions in Arabic, including verses from the Quran, and with floral and geometric designs.

Its construction:

• It was begun at the end of the 12th century by the first Sultan of Delhi, who completed only the first storey.
• Iltutmish added three more storeys.
• After the top storey was damaged by lightning in 1368, Firoz Shah Tughlaq repaired it and added a fifth storey.
• It was later repaired by Sikandar Lodi and, in the 19th century, by the British (Major Robert Smith), who added a cupola that was later removed and is now on the lawns nearby.

Its name:

• It is often said to be named after the Sufi saint Qutbuddin Bakhtiyar Kaki, though others link it to the Sultan who began it.
• Its purpose may have been as a victory tower and as a minaret for the call to prayer at the adjoining Quwwat-ul-Islam mosque.

The Qutub complex:

It includes the Quwwat-ul-Islam mosque (the first mosque built in Delhi after the Turkish conquest), the Iron Pillar of Mehrauli (Gupta period, about 1,600 years old, which has not rusted), the Alai Darwaza, the incomplete Alai Minar, and the tomb of Iltutmish.

The complex was declared a UNESCO World Heritage Site in 1993.

Why not the other options?

• ✗53, 63 and 83 metres are not the correct height.