Question

Uni
Q5: A rectangle A with length 10 centimeters and width 5 centimeters is similar to another rectangle
B whose length is 30 centimeters. Find the area of rectangle B.​

Answer 1

Answer:

Perimeter = 200cm

Length = 70cm

P=2(l+b) P=2l+2b

200=2×70+2b

∴2b=200−140

∴2b=60

b=30

Breadth = 30cm

Answer 2

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$\sf 5 / 10 = w / 30\\ \sf w = (30 ×5) / 10 = 15 \\ \sf 30 ×15 = 450$

The answer is$450cm^{2}$