1.

3. A rectangle of length 24cm and breadth 8cm is joint to asemicircle at 1 end along the length find the area and perimeterof the combined regions so form. With diagram (Take = 3.14)​

Answer»

ANSWER:

In △ABC AB=AC

⇒∠B=∠C (Angles opposite to equal SIDES are equal)

Now using angle SUM property

∠A+∠B+∠C=180

∘

⇒80

∘

+∠C+∠C=180

∘

⇒2∠C=180

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−80

∘

⇒∠C=

2

100

∘

=50

∘

now ∠C+∠x=180

∘

(Angles MADE on straight line (AC) are supplementary)

⇒50

∘

+∠x=180

∘

⇒∠x=180

∘

−50

∘

=130

∘



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