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Areas of Different Plane Figures

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Question

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The lengths of the diagonals of a rhombus are 18 cm and 15 cm. The area of the rhombus is

(a) 270 cm²
(b) 135 cm²
(c) 90 cm²
(d) 180 cm²

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Solution

(b) 135 cm²

Area of the rhombus = $\frac{1}{2}$ × (Product of the diagonals)
= $(\frac{1}{2} \times 18 \times 15)$ cm² = 135 cm²
Hence, the area of the rhombus is 135 cm².

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Similar questions

Q. Mark (✓) against the correct answer
The lengths of the diagonals of a rhombus are 18 cm and 15 cm. The area of the rhombus is

(a) 270 cm²
(b) 135 cm²
(c) 90 cm²
(d) 180 cm²

Q. A rhombus has diagonals that measure 6 cm and 8 cm. What is its area in

c m^{2}

Q. The area of a rhombus is

90

c m^{2}

. If one of the diagonal is

14

cm, what is the length of the other diagonal?

Q. If the sum of diagonals of a rhombus is

10

cm and its area is

12

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Then the length of its diagonals are :

Question 17

What is the area of the rhombus ABCD below if AC = 6 cm and BE = 4 cm?

(a) $36 c m^{2}$ (b) $16 c m^{2}$ (c) $24 c m^{2}$ (d) $13 c m^{2}$

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Areas of Different Plane Figures

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