C-16-Q164mediumsingle_mcq

With outer $10\times 9\times 7$ and inner surface $262$ , the wall thickness is —

a $0.5$ cm
b $1$ cm
c $1.5$ cm
d $2$ cm

ব্যাখ্যা

Subtracting twice the thickness from each outer dimension gives inner dimensions $(10-2t)(9-2t)(7-2t)$ ; only $t=1$ makes the inner surface area equal $262$ sq cm. So the wall thickness is $1$ cm.

এই অধ্যায়ের আরও প্রশ্ন

C-16-Q165A rhombus has each side cm and one diagonal cm. Its other diagonal is —
C-16-Q166The area of a rhombus with side cm and one diagonal cm is —
C-16-Q167A square has side cm. Its diagonal is —
C-16-Q168The perimeter of a square of side cm is —
C-16-Q169A regular hexagon of side cm has area —
C-16-Q170A regular hexagon inscribed in a circle has each side equal to —
C-16-Q171If a regular hexagon of side cm is inscribed in a circle, the area of the circle is —
C-16-Q172The area of the circle minus the area of the inscribed regular hexagon (side cm) is —
C-16-Q173Length of equal sides of an isosceles triangle is cm and area is sq cm. The base is —
C-16-Q174The perimeter of the isosceles triangle with equal sides cm and base cm is —

Chapter 16: Mensuration — সব প্রশ্ন দেখুন (210টি) →

With outer $10\times 9\times 7$ and inner surface $262$ , the wall thickness is —

0.5

1

1.5

2

ব্যাখ্যা

Subtracting twice the thickness from each outer dimension gives inner dimensions $(10-2t)(9-2t)(7-2t)$ ; only $t=1$ makes the inner surface area equal $262$ sq cm. So the wall thickness is $1$ cm.

With outer 10×9×710\times 9\times 710×9×7 and inner surface 262262262, the wall thickness is —

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

With outer 10×9×710\times 9\times 710×9×7 and inner surface 262262262, the wall thickness is —

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

With outer $10\times 9\times 7$ and inner surface $262$ , the wall thickness is —

With outer $10\times 9\times 7$ and inner surface $262$ , the wall thickness is —