The diagonals of a rhombus are 64 cm and 96 cm, respectively. The area of the…
2025
The diagonals of a rhombus are 64 cm and 96 cm, respectively. The area of the rhombus (in cm2) is:
- A.
3024
- B.
3088
- C.
3072
- D.
3118
Show answer & explanation
Correct answer: C
Concept: For a rhombus, the two diagonals bisect each other at right angles, splitting the rhombus into four congruent right triangles. This gives the identity Area = (1/2) × d1 × d2, where d1 and d2 are the lengths of the two diagonals.
Application: Substitute the given diagonal lengths into the identity:
Identify the diagonals: d1 = 64 cm and d2 = 96 cm.
Write the formula with these values: Area = (1/2) × 64 × 96.
Compute the product of the diagonals: 64 × 96 = 6144.
Halve the product: 6144 ÷ 2 = 3072.
Cross-check: Each diagonal is bisected into two equal halves — 32 cm (half of 64 cm) and 48 cm (half of 96 cm) — which are the legs of each of the four right triangles formed. Area of one triangle = (1/2) × 32 × 48 = 768 cm2. Four such triangles give 4 × 768 = 3072 cm2, which matches the result above.
Result: The area of the rhombus is 3072 cm2.