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1 of 8 0-day streak

Perimeter and area of composite shapes

DIFFICULTYintrostandardchallengeexam
Question 1 of 8

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The library floor section has the measurements below

The outer rectangle is 9 m wide and 15 m high. A rectangular corner is removed from the top right. The removed piece measures 5 m by 5 m

The two boundary lengths beside the removed corner are differences of the stated outer and cut-out dimensions

Closed polygon with vertices, in order, (0, 0), (9, 0), (9, 10), (4, 10), (4, 15), (0, 15). Both axes measure m.3690246810121416mm
(a)1 mark

Calculate the outside perimeter. Do not count an internal join

Format: Exact value
(b)1 mark

Determine the area, using each component exactly once

Format: Exact value