Question 1
Mensuration of Plane ShapesA rectangular picture 6cm by 8cm is enclosed by a frame ½cm wide, calculate the area of the frame.
- A.15sq.cm
- B.20sq.cm
- C.13sq.cm
- D.16sq.cm
- E.17sq.cm
Show the answer and explanation
Answer: A (15sq.cm)
Explanation
With the frame the outer rectangle is 7cm by 9cm = 63sq.cm. The picture is 6 × 8 = 48sq.cm, so the frame is 63 − 48 = 15sq.cm.