Menara itu sangat tinggi.

In Indonesian, you often do not need a copula like is / am / are when describing something.

So:

• Menara itu sangat tinggi = That tower is very tall
• literally: tower that very tall

This is completely normal Indonesian.
The adjective tinggi can directly act as the predicate.

Itu usually means that.

So:

• menara itu = that tower

However, in natural Indonesian, itu can also make something sound more specific, so depending on context it may feel like:

• that tower
• or sometimes the tower

In this sentence, the most direct reading is that tower.

In Indonesian, demonstratives like ini (this) and itu (that) usually come after the noun.

So:

• menara itu = that tower
• rumah ini = this house

This is different from English, where this/that comes before the noun.

Sangat means very.

It usually goes before the adjective or adverb it modifies.

So:

• sangat tinggi = very tall
• sangat besar = very big
• sangat cepat = very fast

That is why the sentence is:

• Menara itu sangat tinggi

not Menara itu tinggi sangat.

Tinggi is an adjective meaning tall or high.

In Indonesian, adjectives can function directly as the main predicate of a sentence, so they often appear where English would use is + adjective.

For example:

• Dia tinggi = He/She is tall
• Gedung itu besar = That building is big

So in your sentence, tinggi is still an adjective, even though it works like the main descriptive part of the sentence.

Yes. Tinggi can mean both tall and high, depending on context.

Examples:

• menara tinggi = a tall tower
• gunung tinggi = a high mountain
• harga tinggi = high price

In Menara itu sangat tinggi, tall is the most natural translation.

Yes. Tinggi sekali also means very tall.

So these are both natural:

• Menara itu sangat tinggi
• Menara itu tinggi sekali

A simple way to think about it:

• sangat tinggi = very tall
• tinggi sekali = very tall / extremely tall

Both are common.
Sekali often comes after the adjective, while sangat comes before it.

Usually, you would want a clearer noun phrase. Menara itu sangat tinggi sounds natural because menara itu is a complete, specific phrase: that tower.

If you say Menara sangat tinggi, it may sound incomplete or unusual in many contexts, unless you are speaking in a special style such as headlines, notes, or very compressed speech.

More natural options would be:

• Menara itu sangat tinggi = That tower is very tall
• Sebuah menara sangat tinggi = A tower is very tall (less likely in normal conversation unless introducing it)
• Menara itu tinggi = That tower is tall

Because Indonesian normally uses a basic subject + predicate order, similar to English in many simple sentences.

Here:

• Menara itu = subject
• sangat tinggi = predicate/descriptive part

So the structure is:

• [Menara itu] [sangat tinggi]
• [That tower] [very tall]

That is the normal and expected order.

Usually, adjectives come after nouns when they directly describe a noun inside a noun phrase.

For example:

• menara tinggi = a tall tower
• rumah besar = a big house

But in your sentence, tinggi is not directly inside the noun phrase menara itu. It is the predicate of the sentence:

• Menara itu = the noun phrase / subject
• sangat tinggi = what is being said about it

So this is not the same as menara tinggi.
It is a full sentence: That tower is very tall.

No, that sounds unnatural.

The word adalah is sometimes used as a copula-like word, but it is not normally used before adjectives like tinggi.

Natural Indonesian is:

• Menara itu sangat tinggi

Not:

• Menara itu adalah sangat tinggi

If you use adalah, it is more commonly between noun phrases, especially in formal definitions, such as:

• Jakarta adalah ibu kota Indonesia = Jakarta is the capital of Indonesia

A simple pronunciation guide is:

• menara → meh-NA-ra
• itu → EE-too
• sangat → SA-ngat
• tinggi → TING-gee

A rough full pronunciation:

• meh-NA-ra EE-too SA-ngat TING-gee

A few helpful notes:

• ng in sangat and tinggi sounds like the ng in sing
• g in tinggi is a hard g, like in go
• Indonesian stress is usually fairly even, often with a light emphasis near the second-to-last syllable, but not as strongly stressed as in English

Yes, in some contexts, itu can feel less like literal that and more like a marker of something already known or identifiable, which can resemble English the.

So depending on context:

• menara itu can mean that tower
• but in some situations it may be understood more like the tower

Still, when learning, the safest basic meaning is that.

It is neutral and natural. It works in both everyday and fairly formal Indonesian.

• menara is a standard word for tower
• sangat is standard for very
• tinggi is standard for tall/high

So Menara itu sangat tinggi is a perfectly normal sentence in general Indonesian.