A rectangle with dimensions of 3 units by 5 units is enlarged by a scale factor of 1.4. By what percent does its area increase?

Question

marmal · Answer

A 1 ​ = 3 ∗ 5 = 15 3.5 ∗ 1.4 = 4.9 5 ∗ 1.4 = 7 A 2 ​ = 4.9 ∗ 7 = 34.3 15 34.3 ​ ∗ 100% = 228. ( 6 ) % 228. ( 6 ) % − 100% = 128. ( 6 ) %

malihatanwir50 · Answer

128.(6)% 
 i think this is the ans ;

malihatanwir50 · Answer

The area of the rectangle increases from 15 square units to 29.4 square units when enlarged by a scale factor of 1.4. The increase in area is 14.4 square units, leading to a percent increase of 96%. Therefore, the area increases by 96%. 
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A rectangle with dimensions of 3 units by 5 units is enlarged by a scale factor of 1.4. By what percent does its area increase?

Answer (3)

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