What will be the output of the following program? 10 REM...

What will be the output of the following program? 10 REM AREA OF TRIANGLE IF THREE SIDES ARE GIVEN. $20 \mathrm{READ} \mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{s}$ 30 DATA $12,18,10$ 40 LET $\mathrm{D}=\left[\mathrm{s} *(\mathrm{~s}-\mathrm{a}) *(\mathrm{~s}-\mathrm{b})^{\star}(\mathrm{s}-\mathrm{c})\right]^{\wedge} \frac{1}{2}$ 50 PRINT "THE VALUE OF $\mathrm{D}="$; D 60 PRINT D 70 END (1) 1850 (2) 3200 (3) 6400 (4) Error

What will be the output of the following program?
10 REM AREA OF TRIANGLE IF
THREE SIDES ARE GIVEN.
$20 \mathrm{READ} \mathrm{a}, \mathrm{b}, \mathrm{c}, \mathrm{s}$
30 DATA $12,18,10$
40 LET $\mathrm{D}=\left[\mathrm{s} *(\mathrm{~s}-\mathrm{a}) *(\mathrm{~s}-\mathrm{b})^{\star}(\mathrm{s}-\mathrm{c})\right]^{\wedge} \frac{1}{2}$
50 PRINT "THE VALUE OF $\mathrm{D}="$; D
60 PRINT D
70 END
(1) 1850
(2) 3200
(3) 6400
(4) Error

Key Concepts

Heron's Formula

Heron's formula is a method for finding the area of a triangle when the lengths of all three sides are known. It states that the area is the square root of the product of the semi?perimeter (half of the triangle’s perimeter) and the difference between the semi?perimeter and each side. This formula is widely used because it does not require knowledge of the angles of the triangle.

Semi-perimeter

The semi-perimeter is a key component in Heron’s formula, defined as half the sum of the three sides of a triangle. It simplifies the calculation of the triangle's area by reducing the formula to one involving a single computed value, thereby streamlining the process of computing the area.

Data Input and READ Statement in Programming

Data input in programming often involves reading values from a data structure or source into variables. In languages like BASIC, the READ statement is used to assign constants from a DATA statement to variables. This technique is essential for initializing variables with values prior to performing calculations, but it requires a precise match between the number of variables and the available data.

Error Handling and Debugging

Error handling in programming centers on the detection and management of anomalies or mismatches during execution. In the context of the program, an error may result from providing fewer data values than the number of variables expected, leading to undefined variables or runtime errors. Debugging such issues involves checking that inputs, variable assignments, and computations all align correctly.

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