Question

solve the following questions​

Answer 1

answer 1

t.s.a of hemisphere =3πr square

=3×3.14×10×10

=300×3.14=942

the tsa of hemisphere is 942

answer 2

as x is 3 and y is 4 so put the value of x and y in equation

3×4=a×3+7

12=3a+7

12-7=3a

5=3a

so a is equal to 3/5

answer 5

as perimeter is 180 cm so

3a=180

a=180/3

a=60

Areas of equivalent triangle is √3×a square /4

so √3(60×60)/4

√3(360)/4

√3×360/4

√3×90

√270 is the answer