A rectangular picture 6cm by 8cm is enclosed by a frame \(\frac{1}{2}\)cm wide. Calculate the area of the frame
15sq.cm
20sq.cm
13sq.cm
16sq.cm
17sq.cm
Explanation
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cross multiply both sides with 1/2cm and then multiply your anwser with the 1/2cm

can someone please explain better to me . I dont under how it became 9 & 8 instead of 13/2 & 17/2




There is error in the explanation of this question.
Please how did u got the 9&8

Length of rectangular picture frame = 6 cm
Width of rectangular picture frame = 8 cm
Area of rectangular picture frame = 6×8 cm² = 48 cm²
Length, excluding 1/2 cm wide frame of rectangular picture = (6–1/2-1/2) = 5 cm
Width, excluding 1/2 cm wide frame of rectangular picture = (8–1/2-1/2) = 7 cm
Area, excluding 1/2 cm wide frame of rectangular picture = 5×7 cm² = 35 cm²
Area of 1/2 cm wide frame = 48 - 35 = 13 cm²
Therefore, the area of 1/2 cm wide frame = 48 - 35 = 13 cm²





