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Solve Mathematics And Win MTN Card by Nobody: 12:11pm On Oct 10, 2020
Solve the mathematics below and win MTN CARD:

(1) A circular rubber ring has a radius of 14cm. If 16 of such rubber ring is placed on the top of each other to gain a height of 16cm. Find the area of the new shape.

The last two missing digits of the card is AREA of the new shape minus 9789

CARD: 739832314031773 _ _

(2) 853701541644904_ _

THE MISSING DIGITS IS BETWEEN 15 T0 37

VERY GENUINE

2 Likes

Re: Solve Mathematics And Win MTN Card by Madibah(m): 12:13pm On Oct 10, 2020
36cm

1 Like

Re: Solve Mathematics And Win MTN Card by Xlyad(m): 12:30pm On Oct 10, 2020
zoputa:
Solve the mathematics below and win MTN CARD:

(1) A circular rubber ring has a radius of 14cm. If 16 of such rubber ring is placed on the top of each other to gain a height of 16cm. Find the area of the new shape.

The last two missing digits of the card is AREA of the new shape minus 9789

CARD: 739832314031773 _ _

(2) 853701541644904_ _

THE MISSING DIGITS IS BETWEEN 15 T0 37

VERY GENUINE

are you sure you gave the right question? It will result in a negative answer.
Re: Solve Mathematics And Win MTN Card by uchaymart(m): 12:38pm On Oct 10, 2020
Thank brother...
I have this for the second time.. Though its hundred naira but I'm happy.
No. 1..... The answer is 67..

1 Like

Re: Solve Mathematics And Win MTN Card by Ehiscotch(m): 12:44pm On Oct 10, 2020
The new shape is a cylinder not a circle. Solve for the area of a cylinder.
Re: Solve Mathematics And Win MTN Card by chr1s(m): 12:55pm On Oct 10, 2020
2640cm²

1 Like

Re: Solve Mathematics And Win MTN Card by Xlyad(m): 12:55pm On Oct 10, 2020
uchaymart:
Thank brother...
I have this for the second time.. Though its hundred naira but I'm happy.
No. 1..... The answer is 67..
can we see the solution, please?
Re: Solve Mathematics And Win MTN Card by Nobody: 1:11pm On Oct 10, 2020
uchaymart:
Thank brother...
I have this for the second time.. Though its hundred naira but I'm happy.
No. 1..... The answer is 67..
Very Correct
Re: Solve Mathematics And Win MTN Card by Nobody: 1:12pm On Oct 10, 2020
Madibah:
36cm
Wrong
Re: Solve Mathematics And Win MTN Card by Apreecauts: 1:33pm On Oct 10, 2020
zoputa:
Solve the mathematics below and win MTN CARD:

(1) A circular rubber ring has a radius of 14cm. If 16 of such rubber ring is placed on the top of each other to gain a height of 16cm. Find the area of the new shape.

The last two missing digits of the card is AREA of the new shape minus 9789

CARD: 739832314031773 _ _the answer is 2640cm2

(2) 853701541644904_ _

THE MISSING DIGITS IS BETWEEN 15 T0 37

VERY GENUINE

Re: Solve Mathematics And Win MTN Card by uchaymart(m): 1:36pm On Oct 10, 2020
Xlyad:
can we see the solution, please?

Considering the height, the new shape is now a cylinder.
r=14, h=16
πr²h

= 22/7*14²*16
= 22*2*14*16
=9,856cm²
9,856-9789==67
And=67
Re: Solve Mathematics And Win MTN Card by Nobody: 1:40pm On Oct 10, 2020
NO ONE HAS GOTTEN NUMBER 2?
Re: Solve Mathematics And Win MTN Card by Apreecauts: 1:46pm On Oct 10, 2020
The answer to number 2 is 26
Re: Solve Mathematics And Win MTN Card by Apreecauts: 1:59pm On Oct 10, 2020
uchaymart:


Considering the height, the new shape is now a cylinder.
r=14, h=16
πr²h

= 22/7*14²*16
= 22*2*14*16
=9,856cm²
9,856-9789==67
And=67
.

But what you calculated is for volume

1 Like

Re: Solve Mathematics And Win MTN Card by Calabar1stSon: 2:49pm On Oct 10, 2020
Ah no well!

Re: Solve Mathematics And Win MTN Card by uchaymart(m): 2:54pm On Oct 10, 2020
Apreecauts:
.

But what you calculated is for volume

And still the surface area
Re: Solve Mathematics And Win MTN Card by ncpat(m): 4:10pm On Oct 10, 2020
uchaymart:


Considering the height, the new shape is now a cylinder.
r=14, h=16
πr²h

= 22/7*14²*16
= 22*2*14*16
=9,856cm²
9,856-9789==67
And=67

The above formula is for volume and the hint was for the Area

1 Like

Re: Solve Mathematics And Win MTN Card by NIKEDEEDS(m): 7:46pm On Oct 10, 2020
zoputa:
Solve the mathematics below and win MTN CARD:

(1) A circular rubber ring has a radius of 14cm. If 16 of such rubber ring is placed on the top of each other to gain a height of 16cm. Find the area of the new shape.

The last two missing digits of the card is AREA of the new shape minus 9789

CARD: 739832314031773 _ _

(2) 853701541644904_ _

THE MISSING DIGITS IS BETWEEN 15 T0 37

VERY GENUINE


Please be more explicit

With the introduction of Height, the area can't be calculated any more because the stuff has changed from two dimensional to three dimensional; the only thing that can be calculated is the total surface area of the object formed.

If we are to proceed to calculate the the total surface area, please note the the formula are different for a cylinder open at both ends, a cylinder closed at on end and a cylinder closed at both ends.

However, I will chose 0.0616meters squared as my area if I should come across this question in the exams
Re: Solve Mathematics And Win MTN Card by Xlyad(m): 11:49pm On Oct 10, 2020
uchaymart:


Considering the height, the new shape is now a cylinder.
r=14, h=16
πr²h

= 22/7*14²*16
= 22*2*14*16
=9,856cm²
9,856-9789==67
And=67
that is wrong.what you calculated is the volume . The total surface area of a cylinder is a=2πr(r+h) i.e. the sum of the curved surface area and areas of the circular ends.

1 Like

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