Maharashtra State BoardSSC (English Medium) 8th Standard

Radii of the Circles Are Given Below, Find Their Areas. - Mathematics

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Sum

Radii of the circles are given below, find their areas.
(1) 28 cm
(2) 10.5 cm
(3) 17.5 cm

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Solution

(1) 28 cm

Ar = πr² = π x (28)² 

     = `22/7 xx 28 xx 28`

    = 2464 sq cm

(2) 10.5 cm

Ar = πr² = π x (10.5)² 

     = `22/7 xx 10.5 xx 10.5`

    = 346.5 sq cm

(3) 17.5 cm

Ar = πr² = π x (17.5)² 

     = `22/7 xx 17.5 xx 17.5`

    = 962.5 sq cm

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Chapter 15: Area - Practice Set 15.6 [Page 104]

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Balbharati Mathematics 8th Standard Maharashtra State Board
Chapter 15 Area
Practice Set 15.6 | Q 1 | Page 104

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