90 metres by 40 metres = 3,600 square metres 3,600 square metres = 0.88957937328 acre
1.48645 square metres.
40 ft * 21 ft = 840 sq ft = 78.04 sq metres (to 2 dp).
2.23 square metres.2.23 square metres.2.23 square metres.2.23 square metres.
Square metres x 10.764 = square feet
430.55 square feet
The answer depends on the units of measurement used for the numbers in the question: feet, metres, centimetres, miles, etc.
90 metres by 40 metres = 3,600 square metres 3,600 square metres = 0.88957937328 acre
Four thousand square metres equates to 43,055.6 square feet or about one acre.
1.48645 square metres.
8 feet by 4 feet = 32 square feet. 1 square foot = 0.09290304 square metres. 32 square feet = 2.9728973 square metres.
40 ft * 21 ft = 840 sq ft = 78.04 sq metres (to 2 dp).
2.23 square metres.2.23 square metres.2.23 square metres.2.23 square metres.
Square metres x 10.764 = square feet
40 linear feet, or 40 feet = 12.192 metres.
A metre is a length. Square feet are area. You can draw an infinite number of metres in 120 square feet.
9 square feet = 0.836 square metres, approx.