Math, asked by sinhapalak84, 1 day ago

Find the area of the shaded portion in each of the following figures :​

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Answers

Answered by yashpatel957
0

Answer:

hey solwed this solution

u व्रत की परिधि दे रखी है तो अर्ध व्यास ज्ञात करना है

वृत्त का क्षेत्रफल त्रिज्या के वर्ग का पाई गुना होता है (A = π r²) | इस सूत्र का प्रयोग करते हुए उस वृत्त का क्षेत्रफल पता करें जिसकी व्यास दी गई हो |.

Answered by Acer27
0

Answer: 106.75 cm²

Step-by-step explanation:

Assuming that the given figure is a rectangle of measures 18 × 7 cm,
Length = 18 cm
Breadth = 7 cm

Area of a rectangle = L × B

18 × 7 cm
⇒ 126 cm²

Now, assuming that the white colored part is a uniform semi-circle of diameter 7 cm.

Radius of the semi-circle = 7/2 cm = 3.5 cm

Area of a circle = πr²

22/7 × 3.5 × 3.5
⇒ 38.5 cm²

We need the area of the semi-circle.
∴ 1/2 × 38.5
⇒ 19.25 cm²

Now,
Area of the shaded part = Area of rectangle - Area of semi-circle

∴ 126 cm² - 19.25 cm²
106.75 cm²

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