ABC is a triangle. Find the area of the shaded part.

The height of the shaded triangle is given as $4 \text{ cm}$.
The base of the shaded triangle is given as $6 \text{ cm}$.

The area of a triangle is given by the formula:

The area of the shaded part is $\boxed{\text{12 cm}^2}$.

The digit 4 is in the thousands place ($4 \times 1000$).
The digit 7 is in the hundreds place ($7 \times 100$).
The digit 3 is in the tens place ($3 \times 10$).
The digit 4 is in the ones place ($4 \times 1$).

The expanded form of 4734 is $\boxed{4000 + 700 + 30 + 4}$.

Multiples of 6: $6, 12, 18, \textbf{24}, 30, \dots$
Multiples of 8: $8, 16, \textbf{24}, 32, \dots$

The least common multiple of 6 and 8 is 24.
The least number of mangoes is $\boxed{24}$.

The hundreds digit is 6.
The digit to its right (the tens digit) is 7.

Since the tens digit (7) is 5 or greater, we round up the hundreds digit.
The hundreds digit 6 becomes 7. All digits to the right of the hundreds place become 0.

1678 rounded to the nearest hundreds is $\boxed{1700}$.

Divide the total number of tomatoes by the value of one icon:

To represent 90 tomatoes, you would draw $\boxed{\text{9 tomato icons}}$.