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Nairaland Mathematician. Pls Help Solve This Question by DammyBizEnterpr: 2:43pm On Oct 22, 2017 |
1). A page in a photograph album measures 30cm by 20cm,It contains six square photos,each of the side 6cm. Calculate the area of the page which is not covered by the photos 2) A goat is tied by a rope 2½m long to a peg in some grass. The goat eat 1m² of grass in 28min. How long does it take to eat all that it can reach |
Re: Nairaland Mathematician. Pls Help Solve This Question by doubleportion: 3:03pm On Oct 22, 2017 |
1. 384cm2 2. 70min or 1hr 10min |
Re: Nairaland Mathematician. Pls Help Solve This Question by IamOlusa(m): 3:10pm On Oct 22, 2017 |
The area of the album =30*20= 600cm square.
Each Picture is a square having length 6cm.
Area of a square 6*6cm = 36cm square.
There 6 pictures. i.e 6*36= 216cm square.
Area uncovered is 600-216= 384 cm square. 1 Like |
Re: Nairaland Mathematician. Pls Help Solve This Question by IamOlusa(m): 3:12pm On Oct 22, 2017 |
2. 70mins. |
Re: Nairaland Mathematician. Pls Help Solve This Question by DammyBizEnterpr: 3:50pm On Oct 22, 2017 |
thanks Guys. Please show the workings for number 2 |
Re: Nairaland Mathematician. Pls Help Solve This Question by IamOlusa(m): 4:37pm On Oct 22, 2017 |
DammyBizEnterpr: I wasnt sure of my number 2 answer that's why i didnt show working. metre square is not equivalent to m. assuming it's 1 meter and not 1 square metre, then 70mins is perfectly correct. |
Re: Nairaland Mathematician. Pls Help Solve This Question by babsadewa(m): 5:19pm On Oct 22, 2017 |
DammyBizEnterpr: (2) length of rope = 2.5m rate at which it eat = 1m2 in 28 mins take the area the goat can reach to be area of circle with 2.5 m radius = 22/7 * 2.5 * 2.5 = 19.64 m2 if it takes d goat to 28mins to eat 1m2 area, it will take 28 * 19.64 = 549.92 mins to eat that it can reach. 3 Likes |
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