sides of grey rectangle are 12cmm and 9cm. sides of black rectamgle are 8cm and 10 cm. a small part is overlapped. area of overlapped region is 37
what is area of grey part?
pls answer
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GK and current crush on this device is not a good day mei ladko ko bol rha h kya hai btao yaar ye
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Answer:
28cm.
Step-by-step explanation:
Sol. We have, r1 = 19 cm
r2 = 9 cm
∴ Circumference of circle-I = 2π r1 = 2π (19) cm
Circumference of circle-II = 2π r1 = 2π (19) cm
Sum of the circumferences of circle-I and circle-II
= 2π (19) + 2π (9) = 2π (19 + 9) cm = 2π (28) cm
Let R be the radius of the circle-III.
∴ Circumference of circle-III = 2π R
According to the condition,
2π R = 2π (28)
Thus, the radius of the new circle = 28 cm.
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