the diameter of two circular plates are respectively 10cm and 24cm .what is the diameter of the plates which has area equal to the combined area of the two given plates?
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Answered by
20
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ok.r1=10/2=5,r2=24/2=12. so according to the question π( r1)2+π(r2)2=πR2. after putting the value of r1 and r2 and cancel π both side you will get R2=169, R=13cm. so diameter=2*13=26cm
i not understand
Answered by
25
dear,
here is u r questionn's hint........
r1=5,area=πr^2=22/7*25=
r2=12,area=πr^2=22/7*144
now after adding these two areas,
22/7*25+22/7*144=π(R1)^2
22/7(25+144)=22/7*R1^2
R1^2=169
R1=13cm
now as we know that diameter =2R=2*13=26cm.
if it help u then please mark as brain liest
here is u r questionn's hint........
r1=5,area=πr^2=22/7*25=
r2=12,area=πr^2=22/7*144
now after adding these two areas,
22/7*25+22/7*144=π(R1)^2
22/7(25+144)=22/7*R1^2
R1^2=169
R1=13cm
now as we know that diameter =2R=2*13=26cm.
if it help u then please mark as brain liest
if it help u then please mark as I liest
answer is 26
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