C-16-Q014mediumsingle_mcq

Two sides of a triangle are $4$ cm and $6$ cm with included angle $30°$ . The area is —

a $3$ sq cm
b $6$ sq cm
c $12$ sq cm
d $24$ sq cm

ব্যাখ্যা

Applying $\frac{1}{2}ab\sin C = \frac{1}{2}\cdot 4 \cdot 6 \cdot \sin 30°$ . Since $\sin 30° = \frac{1}{2}$ , the area is $12 \cdot \frac{1}{2} = 6$ sq cm.

এই অধ্যায়ের আরও প্রশ্ন

C-16-Q015Two sides of a triangle are m and m and the area is sq m. The included angle is —
C-16-Q016For a triangle with sides and semi-perimeter , the area is —
C-16-Q017Sides of a triangle are cm. Its semi-perimeter is —
C-16-Q018The approximate area of a triangle with sides cm is —
C-16-Q019The perimeter of a triangle with sides cm is —
C-16-Q020The area of a triangle with sides cm (semi-perimeter ) equals —
C-16-Q021The area of an equilateral triangular region of side is —
C-16-Q022The altitude of an equilateral triangle of side is —
C-16-Q023The area of an equilateral triangle of side cm is —
C-16-Q024The area of an equilateral triangle of side cm is —

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

Two sides of a triangle are $4$ cm and $6$ cm with included angle $30°$ . The area is —

3

sq cm

6

sq cm

12

sq cm

24

sq cm

ব্যাখ্যা

Applying $\frac{1}{2}ab\sin C = \frac{1}{2}\cdot 4 \cdot 6 \cdot \sin 30°$ . Since $\sin 30° = \frac{1}{2}$ , the area is $12 \cdot \frac{1}{2} = 6$ sq cm.

Two sides of a triangle are 444 cm and 666 cm with included angle 30°30°30°. The area is —

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

Two sides of a triangle are 444 cm and 666 cm with included angle 30°30°30°. The area is —

ব্যাখ্যা

এই অধ্যায়ের আরও প্রশ্ন

Two sides of a triangle are $4$ cm and $6$ cm with included angle $30°$ . The area is —

Two sides of a triangle are $4$ cm and $6$ cm with included angle $30°$ . The area is —