Question

A parallelogram has sides 32cm and 16cm and one of its diagonal is 40cm long. Then, its area is..
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Answer 1

Answer:

$\huge\purple\star\underline\mathfrak\pink{ANSWER :-}\purple\star$

Step-by-step explanation:

Let their sides are = ABCD

take ABC as a ∆ find the area using HERON'S formula :-

$\sqrt{s( s- a)(s - b)( s-c )}$

here, s will be 44. now,

$\sqrt{44(44 - 40)(40 - 32)(40 - 16)}$

$\sqrt{44(4)(8)(24)}$

$\sqrt{33792} = 183.82$

after assuming in ∆ we must multiply the area by 2 because it forms 2∆. i.e,

= 2 × 183.82 = 367.64 ans.