Question

a rectangle with dimension of 12 cm and 8cm is enlarged. the ratio of original dimensions to the new dimension is 5:4. find the perimeter and the area of the enlarged rectangle?

Answer 1

Answer:

Perimeter = 50 cm and Area = 150 cm²

Step-by-step explanation:

Ratio= 5 : 4

Find the new dimension:

Original dimension = 12 cm

New dimension = 12/4 x 5 = 15 cm

Original dimension = 8 cm

New dimension = 8/4 x 5 = 10 cm

Find the Perimeter:

Perimeter = 2(Length + Breadth)

Perimeter = 2(15 + 10) = 50 cm

Find the area:

Area = Length x Breadth

Area = 15 x 10 = 150 cm²

Answer: Perimeter = 50 cm and Area = 150 cm²