16. Find the area of the isosceles triangle whose
(i) each of the equal sides is 8 cm and the base
is 9 cm;
(ii) each of the equal sides is 10 cm and the
base is 12 cm;
(iii) each of the equal sides is 7.4 cm and the
base is 6.2 cm;
(iv) perimeter is 11 cm and base is 4 cm.
e
Answers
Give me a brain least.
16. Find the area of the isosceles triangle whose :
(I) each of the equal sides is 8 cm and the base is 9 cm ;
= Area of Isosceles = 1/2×b×h.
= 1/2×9×8.
= [ 8 divide by 2 ] .
= 1×9×4.
= 36. Ans…
(ii) each of the equal sides is 10 cm and the base is 12 cm ;
= Area of isosceles = 1/2×b×h.
= 1/2×12×10.
= [ 10 divide by 2 ].
= 1×12×5.
= 60. Ans…
(iii) each of the equal sides is 7.4 cm and the
base is 6.2 cm;
= Area of isosceles = 1/2×b×h.
= 1/2×6.2×7.4.
= [ 7.4 divide by 2].
= 1×6.2×3.7.
= 22.94. Ans…
(iv) perimeter is 11 cm and base is 4 cm.
= Area of isosceles = 1/2×b×h.
= 1/2×4×11.
= 2×11.
= 22. Ans…