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Practice Set 15.6Radii of the circles are given below, find their areas.(1) 28 cm(2) 10.5 cm (3) 17.5 cm |
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Answer» area of circle=πr^2=22/7×28×28=22×4×28=88×28=2464rest of the same use the formula formula=d/228/2=1410.5/2=5.2517.5/2=8.7517.5/2=10.5/2 "Area of circle'' R1=28cmArea =πr2 =22/7×28×28 =2464cm2 R2=10.5cmArea =22/7×10.5×10.5 = use the area of radius formula then u get the answer....and....do examples....u can get the correct steps and solution also understand r=28cmA=πr^2 =22/7×28×28 =2464cm^2r=10.5A=22/7×10.5×10.5 =346.5cm^2 1.area=2464cm^22 area=346•5cm^23 area 962•5 cm^2 use formula area of circle= πr^2π=22/7 first wala ka answer 2464 area of circleR1=πr2 =22/7*28*28 =2464cm*2464cm R2 =10.5cmarea =22/7*10.5*10.5 =346.5cm*346.5cm R3=17.5cm area=22/7*17.5*17.5 =962.5cm*962.5cm 1)2464 sq cm2)346.5 sq cm3)962.5 sq cm 2464 , 346.5 , and. ,962.5 is the answer (1)2,464sqcm(2)346.5sqcm(3)962.5sqcm are the correct answers 1 246sq cm 2 346.5 sq cm 3 962.5 sq cm ans. 2464 square centimetres |
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