Expand (3x + 1)(x + 2) using the box method of by foiling. Show or explain your steps.
1 answer:
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Answer:
209 cm²
Step-by-step explanation:
This composite figure consist of two figures.
(1) Rectangle with length = 11 cm and width = 16 cm.
(2) Triangle on the top of the rectangle with base = 11 cm and height = 6 cm.
Area of the rectangle = length × width
= 11 × 16
= 176 cm²
Area of the triangle =
=
= 33 cm²
Total area = 176 + 33
= 209 cm²
